1cheat codes

Play a Single-Player game without any in-game codes and accomplish a certain task to unlock these achievements for Gamerscore points.
Private-Act 1 - 15 points Complete Act 1 with rank of Private
Untouchable - 10 points Complete level with no damage taken
Private-Act 2 - 20 points Complete Acts 1 and 2 with rank of Private
Private-Defeated the Strogg - 25 points Complete the game with rank of Private
Corporal-Act 1 - 25 points Complete Act 1 with rank of Corporal
Corporal-Act 1 - 25 points Complete Acts 1 and 2 with rank of Corporal
Corporal-Defeated the Strogg - 30 points Complete the game with rank of Corporal
Lieutenant-Act 1 - 25 points Complete Act 1 with rank of Lieutenant
Lieutenant-Act 2 - 25 points Complete Acts 1 and 2 with rank of Lieutenant
Lieutenant-Defeated the Strogg - 30 points Complete the game with rank of Lieutenant
General-Act 1 - 25 points Complete Act 1 with rank of General
General-Act 2 - 25 points Complete Act 2 with rank of General
General-Defeated the Strogg - 30 points Complete the game with rank of General
Full Arsenal - 20 points Landed a shot from every weapon
Blaster Master - 15 points Completed a level using only the blaster
Blazing Buckshot -15 points Completed a level using only the shotgun
The Machine - 15 points Completed a level using only the machine gun
Pineapple King - 15 points Completed a level using only the grenade launcher
Hyperactive - 15 points Completed a level using only the hyper-blaster
Tooth and Nail - 15 points Completed a level using only the nailgun
Ballistics Expert - 15 points Completed a level using only the rocket launcher
The Sniper - 15 points Completed a level using only the railgun
The Dark Lord - 15 points Completed a level using only the dark matter gun
Enlightening - 15 points Completed a level using only the lightning gun
Solar Star of Courage - 20 points Finish the level with helping the Viper Squad
Sky Marshall’s Medal of Valor - 20 points Rescue PVT Lanier of Eagle Squad
Galactic Order of Heroism - 20 points Finish the level with helping the Raven Squad

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