Assassin

Were you looking for the Halo 2 (Windows Vista) achievement of the same name?

The Assassin medal (Assassination in Halo 4 and Halo 5: Guardians) is awarded for performing an assassination on an opponent from behind in Halo: Reach, Halo 4 and Halo 5: Guardians multiplayer. It is also awarded in campaign and Firefight in Halo: Reach, and in Spartan Ops in Halo 4.

The Assassin medal is represented by a knife on a circle in front of a stylized X.

In Halo: Reach the circle is red; in Halo 4 it is blue. After the player kills an opponent by performing an assassination on an opponent from behind, a message appears on-screen that states: "You assassinated (player's name)."

Trivia

The Halo 2, and Halo 3 Assassin medal was changed into the Beat Down medal in Halo: Reach. This also applies to Halo 4 and Halo 5: Guardians. In Halo Infinite, the name was changed to Back Smack.
The Halo 2, and Halo 3 Beat Down medal was changed into the Pummel medal. In Halo 4 this was changed into the Melee medal, and in Halo 5: Guardians it was changed into Melee Kill.
The Halo Reach achievement That's A Knife is awarded when a player gains this medal in Campaign, Firefight, or Matchmaking. The phrase is a reference to the film Crocodile Dundee.
Performing an Assassination on an Elite to survive a fall that would've been fatal in the Halo: Reach campaign unlocks the If They Came to Hear Me Beg achievement.
Performing an Assassination on a player that has just exited Armor Lock in a Halo: Reach multiplayer matchmaking game on a Defiant map unlocks the Paper Beats Rock achievement.
Assassinating a Promethean Knight in Halo 4 Spartan Ops will unlock the Knight in White Assassination achievement.

Gallery

The Halo: Reach version.
The Halo 4 version.
Unused version of the medal from Halo 5: Guardians.
The Halo 5: Guardians version.

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List of medals

v • d • e Halo: Reach medals (list)

Legendary medals	Unfrigginbelievable • Killionaire • Perfection • Extermination •Skullamanjaro • Hero

Sprees	Killing Spree • Killing Frenzy • Running Riot • Rampage • Untouchable • Invincible • Inconceivable • Hammer Spree • Dream Crusher • Wrecking Crew • Shotgun Spree • Open Season • Buck Wild • Sniper Spree • Sharpshooter • Be the Bullet • Stick Spree • Sticky Fingers • Corrected • Sword Spree • Slice 'N Dice • Cutting Crew • Splatter Spree • Vehicular Manslaughter • Sunday Driver • Wheelman Spree • Road Hog • Road Rage • Laser Spree • Red Menace • Sunburst • Assist Spree • Sidekick • Second Gunman • Juggernaut Spree • Immovable Object • Unstoppable Force • Infection Spree • Mmmm... Brains • Thriller • Zombie Killing Spree • Hell's Janitor • Hell's Jerome • Spawn Spree • Wingman • Broseidon

Multi-kills	Double Kill • Triple Kill • Overkill • Killtacular • Killtrocity • Killimanjaro • Killtastrophe • Killpocalypse

Weapon & style medals	Assassin • Assist • Avenger • Beat Down • Bulltrue • Hijack • Close Call • EMP Blast • Firebird • First Strike • Flag Kill • Grenade Stick • Headcase • Headshot • Kill from the Grave • Killjoy • Laser Kill • Needle Combine Kill • Oddball Kill • Protector • Pull • Pummel • Rejection • Reload This! • Revenge • Showstopper • Skyjack • Sniper Kill • Splatter • Wheelman • Yoink

Objective medals	Hail to the King • Bomb Planted • Flag Score • Killed Oddball Carrier • Killed Bomb Carrier • Killed Flag Carrier • Killed Juggernaut • Last Man Standing

Bungie.net medals	Avenge Me • Big Game Hunter • Ennobled • H. Ryan Memorial • Seek and Destroy • Thank the Maker • Funkadelic • Party Animal • Love Machine • Triple Double • Bros to the End • Steaktacular • Linktacular • Wildcat Destabilizer

v • d • e Halo 4 medals (list)

Spree medals	Killing Spree • Killing Frenzy • Running Riot • Rampage • Untouchable • Invincible • Inconceivable • Unfriggenbelievable • Comeback

Multi-kill medals	Double Kill • Triple Kill • Overkill • Killtacular • Killtrocity • Killamanjaro • Killtastrophe • Killpocalypse • Killionaire • Extermination

Kill medals	Kill • Headshot • Melee • Beat Down • Assassination • Airsassination • Grenade Kill • Plasma Kill • Sniper Rifle Kill • Beam Rifle Kill • Binary Rifle Kill • Rocket Kill • Fuel Rod Cannon Kill • Railgun Kill • Sword Kill • Hammer Kill • Splaser Kill • Supercombine • Vehicle Kill • Splatter

Bonus/Style medals	First Strike • Last Strike • Headcase • Reload This • Kill from the Grave • Revenge • Retribution • Vengeance • Avenger • Protector • Close Call • Hijack • Skyjack • Busted • Showstopper • Bulltrue • Vehicle Destroyed • Killjoy • Hail Mary • Snapshot • Ordnance Earned

Assist/Support medals	Assist • Vehicle Destroy Assist • Wheelman • Distraction • Guardian Angel • Wingman • Bodyguard • Flyin' High • EMP Assist • Road Trip

Dominion medals	Base Capture Initiated • Base Captured • Base Conqueror • Capture Assist • Capture Initiation Assist • Base Defense • Base Offense • Base Saved • Security Chief • Fortification Assist • Resupply Assist • Turret Built • Chief Engineer • Turret Destroyed • Demolition Expert • Gotcha! • Shield Door Destroyed • Breach • Sapper • Survivor • Hero! • Kill Shot!

Regicide medals	King Kill • King Spree • Kingtacular • Reign of Terror • Regicide • Execution • King Slayer • King Joust • King Assist • Savior

Flood medals	Flood Conversion • Alpha Conversion • Infector • Carrier • Juggernaut • Gravemind • Flood Kill • Flood Kill Assist • Flood Hunter • Flood Survivor • Flood Exterminator • Last Man Standing • Final Conversion • Flood Victory • Ancient One • Clever

King of the Hill medals	Hill +5 • Hill +10 • Hill +15 • Hill Dominance • Vehicle Hill +5 • Vehicle Hill +10 • Vehicle Hill +15 • Vehicle Dominance • First Point • Hill Defense • Hill Offense • Hail to the King • Hill Assist • Regime Change

Capture the Flag medals	Flag Capture • Flag Runner • Flag Champion • Flag Assist • Flag Carrier Kill • Flag Defense • Flagsassination • Flag Kill • Flag Joust • Flag Driver

Oddball medals	Ball Holder • Ball Keeper • Ball Master • Ball Hog • Magic Hands • Ball Kill • Smooth Moves • Ballsassination • Carrier Kill • Carrier Kill Assist • Catch • Long Bomb • Nice Catch! • Interception • First Touch

Extraction medals	Site Extracted • Extraction Assist • Beacon Armed • Arm Assist • Arm Stopped • Beacon Converted • Convert Assist • Convert Stopped • Expert Extraction • Site Saviour • Site Offense • Site Defense • Stay Back!

Grifball medals	Score!

Ricochet medals	Goal Defense • Ball Clear • Goal Keeper • Rejection • Fast Break

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Halo 5: Guardians medals (list)

Campaign/Score Attack medals

Vehicle Destroyed

Multiplayer medals

Spree medals	Killing Spree • Killing Frenzy • Running Riot • Rampage • Untouchable • Invincible • Inconceivable • Unfriggenbelievable • Hat Trick • Big Game Hunter

Multi-kill medals	Double Kill • Triple Kill • Overkill • Killtacular • Killtrocity • Killamanjaro • Killtastrophe • Killpocalypse • Killionaire • Extermination

Kill medals	Assassination • Airsassination • Headshot • Longshot • Perfect Kill • Hail Mary • Rocket Mary • Beat Down • Ground Pound • Melee Kill • Shoulder Bash • Stuck • Sniper Headshot • Snapshot • Airborne Snapshot • Splatter

Bonus/Style medals	Close Call • Reversal • Retribution • Brawler • Bulltrue • Starkiller • BXR • Nadeshot • Quickdraw • Noob Combo • Cliffhanger • Sayonara • First Strike • From the Grave • Gunpunch • Snipunch • Deadshot • Spray and Pray • Hard Target • Triple Double • Alley-Oop • Combat Evolved • Big Gun Runner • Cluster Luck • Fastball • Buckle Up • Snipeltaneous • Flyin' High • Hijack • Skyjack • Busted • Road Trip • Wheelman • Top Gun • Power Player • Perfection • Pounder • Pineapple Express

Assist/Support medals	Distraction • Wingman • EMP Assist • Pound Town Assist • Team Takedown • Team Takedown Assist • Protector • Guardian Angel • Bodyguard • Showstopper • Game Saver • Pounder Assist

Strongholds medals	Stronghold Captured • Stronghold Capture Assist • Lockdown • Capture Spree • Total Control Medal • Base Defense • Stronghold Secured Medal

Breakout medals	Blind Side • Superfecta • Trifecta • Perfecta • Duelist • Immortal • Extinction • Fast Break • Buzzer Beater • Triple Threat

Capture the Flag medals	Carrier Kill • Carrier Protected • Flag Capture Assist • Flag Defense • Flag Driver • Flag Joust • Flag Kill • Flag Return • Goal Line Stand • Stealth Capture • Stopped Short • Flag Capture • Flag Runner • Flag Champion • Flagsassination

Infection medals	Zombie Hunter • Zombie Slayer • Hell's Janitor • Hell's Jumper • Zombicide • The Cure • Infector • Carrier • Ravager • Plague Bearer • Lord Of The Flies • Last Man Standing • Infected • Ancient One • Survived • Resourceful • Stalker • Flatline

Grifball/Assault medals	First Touch • Ball Carrier Protected • Ball Clear • Goal Offense • Goal Defense • Ball Carrier Kill • Ball Kill • Goal • Ball Runner • Ball Champion • Ballsassination

Warzone medals

Warzone	Grunt Kill • Jackal Kill • Crawler Kill • Watcher Kill • Soldier Kill • Soldier Assist • Elite Kill • Elite Assist • Hunter Kill • Hunter Assist • Knight Kill • Knight Assist • Warden Kill • Warden Assist • Marine Kill • Marine Assist • Base Capture • Base Defense • Core Defense • Boss Takedown • Legendary Takedown • Mongoose Destroyed • Mongoose Assist • Warthog Destroyed • Warthog Assist • Scorpion Destroyed • Scorpion Assist • Ghost Destroyed • Ghost Assist • Wraith Destroyed • Wraith Assist • Mantis Destroyed • Mantis Assist • Banshee Destroyed • Banshee Assist • Phaeton Destroyed • Phaeton Assist • Phantom Destroyed • Phantom Assist • Wasp Destroyed • Wasp Assist

Warzone kill medals	Kill • Assist • Assault Cannon Kill • Grenade Kill • Grenade Launcher Kill • Incineration Kill • Rocket Kill • Sentinel Beam Kill • Scattershot Kill • Shotgun Kill • Sniper Kill • Beam Kill • Binary Kill • Sword Kill • Hydra Kill • Hammer Kill • Splaser Kill • Supercombine • SAW Kill • Railgun Kill • Caster Kill

Miscellaneous

Cut medals

For a complete list, check out our medals category.

Assassin

Trivia

Gallery

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