Mix Things Up

Mix Things Up is an achievement in Halo Infinite. It is unlocked by getting at least one kill with every weapon available on Warship Gbraakon. This achievement awards the player 20 Gamerscore.

Walkthrough
All weapon kills must be done over one playthrough of the level. In order to access every weapon available in the level, the Thunderstorm skull needs to be activated, as upgraded enemies will spawn with different weapons. The weapons become available in the following order:
 * 1) Assault rifle - Opening loadout. Also found in the hangar and in the room with the holotank displaying the MA40 assault rifle.
 * 2) Sidekick - Opening loadout. Also found in the hangar.
 * 3) Battle rifle - Found in the hangar, inside a crate at the other side of the shield door. A crane moves the crate there shortly after the level starts. A second one can be found in the room before the bridge.
 * 4) Bulldog - Found in the hangar, on a piece of debris held by a crane above the opening spawn location.
 * 5) Disruptor - Held by Unggoy Bouncers throughout the level.
 * 6) Plasma Pistol - Found on various weapon racks in the level, starting from the hangar control room.
 * 7) Mangler - Found on various weapon racks in the level, starting from the hangar control room.
 * 8) Needler - Found on various weapon racks in the level, starting from the room following the first encounter with the Jiralhanae Berserker.
 * 9) Commando - Held by Jiralhanae Warriors throughout the level.
 * 10) Pulse carbine - Found on various weapon racks in the level, with the first one found on the ground in the deployment bay.
 * 11) M41D SPNKr - Held by Jiralhanae Chosen Warriors throughout the level.
 * 12) Frag grenade - Found in small UNSC crates throughout the level, with the first ones found upon exiting the elevator from the deployment bay.
 * 13) Spike grenade - Found on various weapon racks in the level, starting with the room with the holotank displaying the MA40 assault rifle.
 * 14) Plasma grenade - Found on various weapon racks in the level, starting with the two-floored storage room with freight lifts on either side (also where the Boom skull can be found).
 * 15) Plasma cannon - Only found in the hallway after the two-floored storage room. Note that it cannot be carried into the bridge, so you need to keep an enemy alive before picking up the plasma cannon.
 * 16) Heatwave - Only held by the Jiralhanae Warlord in the bridge.
 * 17) Ravager - Only found on a weapon rack on the left side at the far end of the bridge.
 * 18) Hydra - Only found lodged between two crates in the room underneath the elevator at deployment bay near the end of the escape sequence.

The achievement should be rewarded upon earning the last kill, rather than at the completion of the level.

Trivia

 * The achievement's name is a reference to John-117's quote "thought I'd try shooting my way out - mix things up a little" in Halo 3 level Cortana.