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{{Title|''Halo: Campaign Evolved'' skulls}} {{Status|RealWorld}} {{New content}} [[File:CEV PK Skulls Art.jpg|350px|thumb|Artwork promoting skulls in ''Halo: Campaign Evolved''.]] '''[[Skull]]s''' are a collectible in the [[campaign]] mode of ''[[Halo: Campaign Evolved]]''.{{Ref/Marketing|Id=Vidoc|CEV|Halo: Campaign Evolved First Look: Skulls, Remix & Co-Op}}{{Ref/Site|Id=WaypointSkulls|URL=https://www.halowaypoint.com/news/skulls-campaign-remix-halo-campaign-evolved|Site=Halo Waypoint|Page=<nowiki>Skulls & Campaign Remix | Halo: Campaign Evolved</nowiki>|D=10|M=06|Y=2026}}{{Ref/Site|URL=https://support.halowaypoint.com/hc/en-us/articles/50945006304404-Collectibles-in-Halo-Campaign-Evolved|Site=Halo Support|Page=Collectibles in Halo: Campaign Evolved|D=03|M=08|Y=2026}} ==Overview== [[File:CEV PK Skull Chief.jpg|250px|thumb|The Chief finds the Grunt Funeral skull.]] The skulls are hidden throughout campaign missions; once picked up, the skulls unlock gameplay-modifiers in the menu that either increases difficulty or grants additional perks/upgrades.{{Ref/Reuse|WaypointSkulls}} ''Halo: Campaign Evolved'' has more skulls than any prior ''Halo'' game,{{Ref/Site|URL=https://ew.com/halo-combat-evolved-remake-ps5-crossover-25-years-player-feedback-exclusive-11835878|Site=Entertainment Weekly|Page=Halo team talks new Combat Evolved remake, crossing over to PS5, and addressing 25 years of player feedback (exclusive)|D=24|M=10|Y=2025}} with 42 available for unlock and use.{{Ref/Site|Id=WPIntroducing|URL=https://www.halowaypoint.com/news/introducing-halo-campaign-evolved|Site=Halo Waypoint|Page=Introducing Halo: Campaign Evolved|D=24|M=10|Y=2025}}{{Ref/Marketing|Id=Roundtable|HCEV|Halo: Campaign Evolved Roundtable Reveal}} The skulls broadly fall under two categories: 26 Legacy skulls—[[CEA:Skulls|skulls]] from the original ''[[Halo: Combat Evolved Anniversary]]'' as well as [[MCC:Skulls|other ones]] introduced in ''[[Halo: The Master Chief Collection]]''—and 16 new skulls with unique effects, some of which modify gameplay elements to resemble the original ''[[Halo: Combat Evolved]]''.{{Ref/Reuse|WaypointSkulls}} There are 39 collectible skulls to be retrieved across 13 missions; three skulls are hidden in each of the ten original campaign missions,{{Ref/Reuse|Vidoc}} while nine can be found in the three missions depicting [[Operation: METEORITE]].{{Ref/Reuse|WaypointSkulls}} The skulls are in different locations to their equivalents in ''Anniversary'' due to the increased number of skulls and altered level layouts.{{Ref/YouTube|Id=CEVStream|s5Ikef1DvY0|Halo|Co-Op, Remix, & LASO Livestream - Halo: Campaign Evolved|D=16|M=07|Y=2026}} As a hint, each skull emits a ghostly hissing sound as an audio cue, growing louder in volume as players approach the skull. After players have found two skulls, they will unlock three additional skulls (Adaptation, Reload, and Armistice) as well as the [[Campaign Remix]] feature,{{Ref/Reuse|WaypointSkulls}} which allows players to randomise weapon behaviours, enemy placements, player attributes, environmental effects, and more.{{Ref/Reuse|WPIntroducing}} A specifically-curated selection of 17 skulls must be found in order to unlock the game's official [[Mythic (difficulty)#Halo: Campaign Evolved|LASO]] difficulty. Despite the name, ''Campaign Evolved''{{'}}s iteration of LASO does not require all 42 skulls to be enabled as unlike prior games many skulls now make the game easier. Details on LASO in ''Campaign Evolved'' can be found [[Mythic (difficulty)#Halo: Campaign Evolved|here]].{{Ref/Reuse|CEVStream}} {{Clear|left}} ==List of new skulls== ===Adaptation=== [[File:HCEV Skull Adaptation Icon.png|75px|left]] {{Quote|Randomizes the enemy factions present in the mission.}} '''Unlock requirement''': Unlock any two skulls.{{Ref/Reuse|WaypointSkulls}}<br> '''Effects:''' Randomises the spawns for [[Non-playable character|enemy AI]] during campaign levels. Automatically enabled in [[Campaign Remix]] mode. {{Clear|left}} ===Armistice=== [[File:HCEV Skull Armistice Icon.png|75px|left]] {{Quote|Enemy factions never fight one another.}} '''Unlock requirement''': Unlock any two skulls.{{Ref/Reuse|WaypointSkulls}}<br> '''Effects:''' Aligns all enemy AI on the same team, so that [[Covenant]], [[Flood]], and [[Sentinels]] do not fight each other (particularly if spawned together via Adaptation skull). Automatically enabled in Campaign Remix mode. {{Clear|left}} ===Efficient=== [[File:HCEV Skull Efficient Icon.png|75px|left]] {{Quote|Enemies killed while the player is at full health drop more ammo.}} '''Unlock location:''' On the level [[CEV:Heavy Burden|Heavy Burden]], during "Tunnel Vision" chapter, after reactivating the gondola's power; the skull is located in back corner on the left platform in the second room.<br> '''Effects:''' Enemies drop more spare ammunition if killed when the player has full health. {{Clear|left}} <gallery class=center> File:HCEV Skull Efficient 1.png File:HCEV Skull Efficient 2.png </gallery> ===Endurance Spec=== [[File:HCEV Skull EnduranceSpec Icon.png|75px|left]] {{Quote|UNSC vehicles cannot be damaged.}} '''Unlock location:''' On the level [[CEV:The Truth and Reconciliation|The Truth and Reconciliation]], during the "Into the Belly of the Beast" chapter, in the ship's second large room, the cargo bay; the skull is located on the pillar closest to the locked door. Players can jump from the upper floor, and then between pillars to reach the skull.<br> '''Effects:''' Changes the UNSC vehicles (the [[CEV:Warthog|Warthog]] and [[CEV:Scorpion|Scorpion]]) so they can't be damaged, mimicking their behaviour in the original ''Combat Evolved''. {{Clear|left}} <gallery class=center> File:HCEV Skull Endurance Spec 1.png File:HCEV Skull Endurance Spec 2.png </gallery> ===Floor is Lava=== [[File:HCEV Skull FloorIsLavaIcon.png|75px|left]] {{Quote|Take continuous damage whenever touching the "ground".}} '''Unlock location:''' On the level [[CEV:Halo|Halo]], during the "Reunion Tour" chapter, where the player rescues a group of marines at a rock slide; the skull is located on top of one of the large rocks. Players need to jump between the rocks to reach the skull, starting from the large rock where the marine sniper is located.<br> '''Effects:''' The player takes damage when they touch the floor. {{Clear|left}} <gallery class=center> File:HCEV Skull Floor is Lava 1.png File:HCEV Skull Floor is Lava 2.png </gallery> ===Give & Take=== [[File:HCEV Skull Give&TakeIcon.png|75px|left]] {{Quote|Firing your weapon drains your shield, but dealing damage to enemies recharges it.}} '''Unlock location:''' On the level [[CEV:Halo|Halo]], during the "Reunion Tour" chapter, where the player rescues three groups of marines; the skull is located inside the large cave in the middle of region.<br> '''Effects:''' Firing the weapon drains the player's shield, while dealing damage to enemies recharges it. {{Clear|left}} <gallery class=center> File:HCEV Skull Give&Take 1.png File:HCEV Skull Give&Take 2.png </gallery> ===Hip Fire=== [[File:HCEV Skull HipFire Icon.png|75px|left]] {{Quote|All weapon zoom functionality is disabled.}} '''Unlock location:''' On the level [[CEV:The Silent Cartographer|The Silent Cartographer]], during the "Shafted" chapter, inside the Cartographer facility; the skull is located in a small platform in the shaft around the U-shaped ramp immediately after fighting a pair of Hunters.<br> '''Effects:''' Mimics traditional ''Halo'' gameplay by disabling all [[Smart-linking|weapon zoom]] functionality. {{Clear|left}} <gallery class=center> File:HCEV Skull Hip Fire.png </gallery> ===Johnny Ammo Seed=== [[File:HCEV Skull JohnnyAmmoSeed Icon.png|75px|left]] {{Quote|When reloading you lose the ammo remaining in the discarded clip.}} '''Unlock location:''' On the level [[CEV:Boarding Action|Boarding Action]], during the "Change of Plans" chapter, after clearing the training room that hosts a gravity bridge; the skull is located is in the upper walkways in the previous room, which is now accessible from the door in the training room's upper floor. Upon entry into the previous room's upper walkways, the door across the room unlocks and reveals four Elites wielding energy swords.<br> '''Effects:''' Mimics the reload behaviour seen in tactical shooters, where discarding a magazine also means discarding any remaining rounds in that magazine. {{Clear|left}} <gallery class=center> File:HCEV Skull Johnny Ammo Seed 1.png| File:HCEV Skull Johnny Ammo Seed 2.png| </gallery> ===Leadhead=== [[File:HCEV Skull LeadHead Icon.png|75px|left]] {{Quote|Headshots no longer provide extra damage or instant kills.}} '''Unlock location:''' On the level [[CEV:Boarding Action|Boarding Action]], during the "Forge Reconnaissance" chapter, in the room holding a raised platform with a gravity lift in its center; this room precedes the large hangar bay near the end of the level. The skull is located at the end of the hallway through the door left of the gravity lift, though the door unlocks only during the third and final wave.<br> '''Effects:''' Disables [[headshot]]s. {{Clear|left}} <gallery class=center> File:HCEV Skull Leadhead 1.png| File:HCEV Skull Leadhead 2.png| </gallery> ===Magnified=== [[File:HCEV Skull Magnified Icon.png|75px|left]] {{Quote|[[CEV:Assault Rifle|AR]] holds 60-round magazines.}} '''Unlock location:''' On the level [[CEV:The Pillar of Autumn|The Pillar of Autumn]], during the "Reveille" chapter; the skull is located on top of the first weapon rack in the middle of the armory, just before the injured marines.<br> '''Effects:''' Changes the magazine and firing properties of the Assault Rifle to mimic the [[CE:Assault Rifle|original weapon]] in ''Combat Evolved''. {{Clear|left}} <gallery class=center> File:HCEV Skull Magnified.png| </gallery> ===Perspective=== [[File:HCEV Skull Perspective Icon.png|75px|left]] {{Quote|Changes the player camera to third-person.}} '''Unlock location:''' On the level [[CEV:The Pillar of Autumn|The Pillar of Autumn]], in the ship's bridge; the skull is located on the floor of the domed viewport.<br> '''Effects:''' Lets the player play in [[Third-person shooter|third-person]]. The concept of a third-person skull was originally [[H3:Skulls#Cut skulls (Halo 3: ODST)|considered for inclusion]] in ''[[Halo 3: ODST]]''.{{Ref/YouTube|Id=Zedd|9InGqBDgff8|Lord Zedd|Halo 3: ODST - Unused Skulls|D=11|M=06|Y=2026}} {{Clear|left}} <gallery class=center> File:HCEV Skull Perspective.png| </gallery> ===Pop=== [[File:HCEV Skull Pop Icon.png|75px|left]] {{Quote|Shooting Flood in their weak point causes them to explode.}} '''Unlock location:''' On the level [[CEV:The Library|The Library]], during the "Wait, It Gets Worse!" chapter; the skull is located on a ledge directly opposite to the locked door leading into the main chamber. Players can climb a nearby ramp, then jump to the ledge from one of the decorative columns.<br> '''Effects:''' Makes [[Flood]] enemies explode if shot in their weak points. {{Clear|left}} <gallery class=center> File:HCEV Skull Pop 1.png| File:HCEV Skull Pop 2.png| </gallery> ===Reload=== [[File:HCEV Skull Reload Icon.png|75px|left]] {{Quote|Randomizes the pre-placed weapons for the mission.}} '''Unlock requirement''': Unlock any two skulls.{{Ref/Reuse|WaypointSkulls}}<br> '''Effects:''' Randomises weapon placements on a mission. Automatically enabled in Campaign Remix mode. {{Clear|left}} ===Speed Limit=== [[File:HCEV Skull SpeedLimit Icon.png|75px|left]] {{Quote|Disables [[sprint]].}} '''Unlock location:''' On the level [[CEV:The Pillar of Autumn|The Pillar of Autumn]], during the "Reveille" chapter; the skull is located on upper walkway opposite to the optical diagnostics station. Players can crouch-jump to one of the canisters in the back of the room to reach the walkway.<br> '''Effects:''' Disables sprint, mimicking traditional ''Halo'' gameplay. {{Clear|left}} <gallery class=center> File:HCEV Skull SpeedLimit.png| </gallery> ===Stowed Reload=== [[File:HCEV Skull StowedReload Icon.png|75px|left]] {{Quote|Weapons reload while stowed.}} '''Unlock location:''' On the level [[CEV:The Maw|The Maw]], during the "...And the Horse You Rode In On" chapter; the skull is located at the tip of a horizontal beam in the far-left corner of the cryo bay.<br> '''Effects:''' Mimics the [[speedy reload]] exploit present in the original ''Halo: Combat Evolved''; swapping weapons reloads them. {{Clear|left}} <gallery class=center> File:HCEV Skull Stowed Reload.png| </gallery> ===Temperamental=== [[File:HCEV Skull Temperamental Icon.png|75px|left]] {{Quote|Allies will attack the player more quickly if the player kills a friendly.}} '''Unlock location:''' On the level [[CEV:The Most Dangerous Game|The Most Dangerous Game]], during the "Prisoner's Dilemma" chapter; the skull is located at the center structure in the outdoor area after having rescued the marine prisoners. The skulls only spawns after clearing the area, and after the player has damaged the Elite HVT in all three of his previous appearances: on the raised platform to the right in the woodlands, at the entrance to the prison facility after the large bridge, and on the upper ledge in this very same outdoor area, where he is marked on the HUD.<br> '''Effects:''' Enemy AI gets more aggressive when the player kills their allies. {{Clear|left}} <gallery class=center> File:HCEV Skull Temperamental 1.png| File:HCEV Skull Temperamental 2.png| </gallery> ==List of Legacy skulls== ===Acrophobia=== [[File:HCEV Skull Acrophobia Icon.png|75px|left]] {{Quote|The Corps: now issues rifles AND wings.}} '''Unlock location:''' On the level [[CEV:The Silent Cartographer|The Silent Cartographer]], atop the Marathon-shaped structure near the center of the island where the first Hunter pair is fought; the skull is located at the top of the structure, where the horizontal beam meets the natural terrain. Players can scale the structure by jumping on the small decorative ledges along its side.<br> '''Effects:''' Allows the player to fly by [[CEV:Control schemes|holding the jump button]]. {{Clear|left}} <gallery class=center> File:HCEV Skull Acrophobia 1.png| File:HCEV Skull Acrophobia 2.png| </gallery> ===Angry=== [[File:HCEV Skull Angry Icon.png|75px|left]] {{Quote|Enemies fire their weapons faster and more frequently.}} '''Unlock location:''' On the level [[CEV:Assault on the Control Room|Assault on the Control Room]], during the "Rolling Thunder" chapter; the skull is located on top of one the three rib-like beams above the artificial trench underneath the twin-bridge.<br> '''Effects:''' Enemy AI becomes more aggressive. {{Clear|left}} <gallery class=center> File:HCEV Skull Angry.png| </gallery> ===Bandana=== [[File:HCEV Skull Bandanna Icon.png|75px|left]] {{Quote|Infinite ammo and grenades.}} '''Unlock location:''' On the level [[CEV:The Silent Cartographer|The Silent Cartographer]], near the main Cartographer facility's entrance; the skull is located in the cave to the right of the entrance.<br> '''Effects:''' Grants the player unlimited ammo and grenades. {{Clear|left}} <gallery class=center> File:HCEV Skull Bandana 1.png| File:HCEV Skull Bandana 2.png| </gallery> ===Black Eye=== [[File:HCEV Skull BlackEye Icon.png|75px|left]] {{Quote|Your shields will only recharge when you melee enemies.}} '''Unlock location:''' On the level [[CEV:Two Betrayals|Two Betrayals]], during the "Breaking Stuff to Look Tough" chapter; the skull is located in an alcove of Flood biomass underneath the twin-bridge.<br> '''Effects:''' The player's [[Energy shielding|energy shields]] only recharge when they [[CEV:Melee|melee]] enemies. {{Clear|left}} <gallery class=center> File:HCEV Skull BlackEye 1.png| File:HCEV Skull BlackEye 2.png| </gallery> ===Blind=== [[File:HCEV Skull Blind Icon.png|75px|left]] {{Quote|HUD and weapons do not appear on screen.}} '''Unlock location:''' On the level [[CEV:Keyes|Keyes]], during the "Upstairs, Downstairs" chapter; the skull is located at the end of the large hallway that connects the cargo bay to the gravity lift bay. Players can access the hallway from the cargo bay, where the door opens to release a group of [[Flood attacker form]]s. Inside the hallway, players need to jump over a destroyed [[CEV:Wraith|Wraith]] and [[Covenant supply cases|supply cases]] to reach the skull.<br> '''Effects:''' Disables the [[Heads-up display|HUD]] and first-person weapon. This is distinct from the disable HUD option in the settings menu, which still leaves the weapon on-screen. {{Clear|left}} <gallery class=center> File:HCEV Skull Blind.png| </gallery> ===Boom=== [[File:HCEV Skull Boom Icon.png|75px|left]] {{Quote|Explosion radius is increased by 2x.}} '''Unlock location:''' On the level [[CEV:The Maw|The Maw]], during the "Light Fuse, Run Away" chapter; the skull is located on a small ledge on the right side of the engineering room. Players can jump down to the ledge from the upper walkway.<br> '''Effects:''' Doubles explosion radius. {{Clear|left}} <gallery class=center> File:HCEV Skull Boom.png| </gallery> ===Catch=== [[File:HCEV Skull Catch Icon.png|75px|left]] {{Quote|Enemies throw and drop more grenades.}} '''Unlock location:''' On the level [[CEV:Keyes|Keyes]], during the "Under New Management" chapter; the skull is located in the middle of the gravity lift and ascends with the player into the ship, though it only spawns if the player reaches this point in the level on Heroic within three minutes after the level begins (with the timer carrying over when reloading checkpoints). Playing the level with Acrophobia skull enabled will disable the skull's spawn, though players can enable other skulls as well as any of the difficulty modifiers.<br> '''Effects:''' Enemies throw and drop more grenades. {{Clear|left}} <gallery class=center> File:HCEV Skull Catch.png| </gallery> ===Cowbell=== [[File:HCEV Skull Cowbell Icon.png|75px|left]] {{Quote|Mass of all objects is reduced, making them more easily displaced.}} '''Unlock location:''' On the level [[CEV:Assault on the Control Room|Assault on the Control Room]], during the "If I had a Super Weapon..." chapter; the skull is located in the center fin protruding from the control room's exterior structure, just directly underneath the bridge.<br> '''Effects:''' Objects weigh less, meaning they are flung further when moved. {{Clear|left}} <gallery class=center> File:HCEV Skull Cowbell.png| </gallery> ===Eye Patch=== [[File:HCEV Skull EyePatch Icon.png|75px|left]] {{Quote|All auto-aim is disabled for all weapons.}} '''Unlock location:''' On the level [[CEV:Heavy Burden|Heavy Burden]], during the "Best Served Cold" chapter; the skull is located next to a locked door on a narrow upper walkway running parallel to a large bridge leading towards the ship's bridge.<br> '''Effects:''' Disables [[auto-aim]]. {{Clear|left}} <gallery class=center> File:HCEV Skull EyePatch 1.png| File:HCEV Skull EyePatch 2.png| </gallery> ===Famine=== [[File:HCEV Skull Famine Icon.png|75px|left]] {{Quote|Weapons dropped by enemies contain half the ammo.}} '''Unlock location:''' On the level [[CEV:The Library|The Library]], during the "Fourth Floor: Tools, Guns, Keys to Super Weapons" chapter; the skull is located in an alcove of Flood biomass immediately to the left after entering the tunnels, the entrance of which is directly opposite of the elevator.<br> '''Effects:''' All weapons dropped by enemies have their ammo reserves halved. {{Clear|left}} <gallery class=center> File:HCEV Skull Famine.png| </gallery> ===Fog=== [[File:HCEV Skull Fog Icon.png|75px|left]] {{Quote|[[Motion tracker]] is disabled.}} '''Unlock location:''' On the level [[CEV:343 Guilty Spark|343 Guilty Spark]], during the "Well Enough Alone" chapter; the skull is located on a small hill to the left before crossing the tree-bridge that leads to the containment facility.<br> '''Effects:''' Disables the motion tracker. {{Clear|left}} <gallery class=center> File:HCEV Skull Fog.png| </gallery> ===Foreign=== [[File:HCEV Skull Foreign Icon.png|75px|left]] {{Quote|Players cannot use weapons from another faction.}} '''Unlock location:''' On the level [[CEV:The Truth and Reconciliation|The Truth and Reconciliation]], during the "Into the Belly of the Beast" chapter, on the bottom floor of the ship's hangar; the skull is located in the hallway in the further corner on the right from the entry point. Players can access the hallway when enemies spawn in and exit through the doors in either corner of the hangar bay.<br> '''Effects:''' The player can only use human weapons (the [[CEV:Assault Rifle|Assault Rifle]], [[CEV:Magnum|Magnum]], [[CEV:SMG|SMG]], [[CEV:Battle Rifle|Battle Rifle]], [[CEV:Shotgun|Shotgun]], [[CEV:Sniper Rifle|Sniper Rifle]], [[CEV:Frag Grenade|Frag Grenade]], and [[CEV:Rocket Launcher|Rocket Launcher]]). {{Clear|left}} <gallery class=center> File:HCEV Skull Foreign.png| </gallery> ===Ghost=== [[File:HCEV Skull Ghost Icon.png|75px|left]] {{Quote|Enemies no longer flinch when taking fire.}} '''Unlock location:''' On the level [[CEV:The Most Dangerous Game|The Most Dangerous Game]], during the "Hunters Hunted" chapter, after crossing the gravity bridge and going through through a cavern with a large door at its end; the skull is located at one of the braziers above after crossing the doorway. Players can jump along the natural terrain on left side of the area to reach the brazier.<br> '''Effects:''' Enemies do not flinch when being shot. {{Clear|left}} <gallery class=center> File:HCEV Skull Ghost.png| </gallery> ===Grunt Birthday Party=== [[File:HCEV Skull GruntBirthdayParty Icon.png|75px|left]] {{Quote|Grunt headshots produce legendary celebrations.}} '''Unlock location:''' On the level [[CEV:Heavy Burden|Heavy Burden]], during the "Two-Fisted Cyborg Justice" chapter, in a large three-floored chamber; the skull is located on a rock column in the center of the chamber.<br> '''Effects:''' Grunts explode in a celebration and confetti when they die to a headshot. {{Clear|left}} <gallery class=center> File:HCEV Skull GruntBirthdayParty.png| </gallery> ===Grunt Funeral=== [[File:HCEV Skull GruntFuneral Icon.png|75px|left]] {{Quote|Grunts die in a blaze of plasma.}} '''Unlock location:''' On the level [[CEV:Halo|Halo]], during the "Reunion Tour" chapter, where the player rescues a group of marines at a beacon tower; the skull is located at the bottom of the split of the delta-shaped structure, where the energy pulse is emitted. Players need to use a grenade jump to reach the skull.<br> '''Effects:''' Grunts die in a [[CEV:Plasma Grenade|Plasma Grenade]] explosion when killed. {{Clear|left}} <gallery class=center> File:HCEV Skull Grunt Funeral.png| </gallery> ===Iron=== [[File:HCEV Skull Iron Icon.png|75px|left]] {{Quote|Dying in co-op resets you to your last checkpoint. Dying in solo restarts the level.}} '''Unlock location:''' On the level [[CEV:The Truth and Reconciliation|The Truth and Reconciliation]], during the "The Truth and Reconciliation" chapter, at the bottom of the ship's gravity lift; the skull is located on a small ledge near the cliff edge facing a natural bridge in the horizon. The ledge is located near two cactus-like plants with a tree standing between the two.<br> '''Effects:''' Dying in co-op resets you to your last checkpoint. Dying in solo restarts the level. {{Clear|left}} <gallery class=center> File:HCEV Skull Iron 1.png| File:HCEV Skull Iron 2.png| </gallery> ===IWHBYD=== [[File:HCEV Skull IWHBYD Icon.png|75px|left]] {{Quote|It would have been your dialogue.}} '''Unlock location:''' On the level [[CEV:Assault on the Control Room|Assault on the Control Room]], during the "I Would Have Been Your Daddy..." chapter; the skull is in a small alcove in the underground tunnel section, to the left after crossing the bridge. Players will need to jump on the Scorpion to reach the small alcove.<br> '''Effects:''' NPCs play humorous dialogue more often. <gallery class=center> File:HCEV Skull IWHBYD 1.png| File:HCEV Skull IWHBYD 2.png| </gallery> {{Clear|left}} ===Malfunction=== [[File:HCEV Skull Malfunction Icon.png|75px|left]] {{Quote|Upon respawn a random element of your HUD no longer appears.}} '''Unlock location:''' On the level [[CEV:Boarding Action|Boarding Action]], during the "Away Team" chapter; the skull is located on at the top of the wall directly facing the docked Spirit. Players need to progress through the level as usual until fighting the first pair of Hunters before leaving hangar bay; from there, they need to jump to the circular platform where Johnson was previously situated to provide covering fire, then traverse across the bay to reach the top of the wall next to the docked Spirit.<br> '''Effects:''' Elements of the HUD are randomly disabled upon respawn. In each instance, it could be one of the following: weapon crosshair (including the crosshair and ammo counter in the smart-link interface), shield/health meter, weapon/ammunition counter, grenade counter, and motion tracker (not applicable if Fog is enabled). {{Clear|left}} <gallery class=center> File:HCEV Skull Malfunction 1.png| File:HCEV Skull Malfunction 2.png| File:HCEV Skull Malfunction 3.png| File:HCEV Skull Malfunction 4.png| File:HCEV Skull Malfunction 5.png| </gallery> ===Mythic=== [[File:HCEV Skull Mythic Icon.png|75px|left]] {{Quote|Enemies have increased health.}} '''Unlock location:''' On the level [[CEV:Two Betrayals|Two Betrayals]], during the "Breaking Stuff to Look Tough" chapter; the skull is at the end of a series of hallways and rooms near the second phase pulse generator. Players need to activate the control panel at the top of the central structure outside the second phase pulse generator in the second canyon. The control panel unlocks the door on the platform opposite of the platform leading to the second phase pulse generator. Players then need to clear each area of enemies before interacting with a control panel to proceed to the next area. At clearing the third area,