Alien Rage Achievements Full list of all 20 Alien Rage achievements worth 400 gamerscore. It takes around 10-12 hours to unlock all of the achievements on Xbox 360.Filter Achievement View View Image viewList view Sort by TrueAchievement desc TrueAchievement asc Achievement name desc Achievement name asc GamerScore desc GamerScore asc TA Ratio desc TA Ratio asc Gamers desc Gamers asc Xbox.com order Date won desc Date won asc Flag Filter All None 20 Offline Mode 20 Single Player 14 Main Storyline 1 Story Completed 1 Difficulty Specific 1 Collectable 3 Cumulative + Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply TenaciousComplete single player campaign on any difficulty level 1 guideHardcoreComplete single player campaign on Brutal difficulty 1 guideHide adsGiant KillerDefeat Vorus Centurion 1 guideSecuredDefeat Security Turrets 1 guideShowdownDefeat Vorus Gladiator 1 guideOverdriveDefeat Mk XII Heavy Mech 1 guideGangbusterDefeat AA-19 Combat Mech 1 guideBehemothDefeat GX-7 Destroyer Prototype 1 guidePitching MachineDefeat Vorus Primus 1 guideGuardianDefeat DF9 Sentry Mech 1 guide ArachnophobeDefeat Vorus God Mech 1 guidePoint & ShootFind a new weapon 1 guideArmed & CompletionistUse all weapons 1 guideJuicedUnlock first Perk 1 guideCan’t HomidecideKill an enemy with every weapon 1 guideWhen Titans FallDefeat all Bosses 1 guideHoarderFind all weapons 1 guideRelentless1500 Total Kills 1 guide Utility BeltUnlock all player perks 2 guidesApex PredatorReach a player score of 25,000,000 1 guide