20XX Achievements Here is the full list of all 28 20XX achievements worth 1,000 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Xbox One.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 28 Online/Offline 28 Single Player 28 Cooperative 3 Main Storyline 13 Stackable 20 Missable 5 Time/Date Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply MightComplete the game with High Tide, Marathon, Wrath, Undying, and Destiny active. FervorComplete the game with Wrath, Undying, Furor, and Swarm active. Brittle BattleComplete the game with Wrath, Famine, Marathon, and Toxin active. Fox OnlyComplete the game with Final Destination active. Perfect StormWith the High Tide Skull on, complete the game without taking any maximum health increases. QuadrakillOn Level 8, defeat all four Rollsters within three seconds of each other. OvergrowthOn Level 8, defeat Death Lotus with all spawn points occupied. 1 guideHard Hat ZoneOn Level 8, defeat both Astrals with falling platforms. Dr. DeviceOn Level 8, defeat 50 Flapps and Eternal Star within two seconds using Force Nova. Move Like They DoOn Level 8, survive for 60 seconds without taking damage during The Perforator fight. 1 guideProvokeOn Level 8, defeat Vile Visage by breaking his horn, then only using basic attacks. 1 guideHeavy MetalOn Level 8, defeat Kur with one steady stream of Vera bullets. Not CoolOn Level 8, defeat Shatterbeak without allowing him to use any abilities. 1 guideThunder FollowsComplete the game within 28 minutes. 1 guideVanillaComplete the game with the starting Primary and no Powers. 1 guideAncestor WorshipComplete the game with Rock and Purist active. JourneyComplete the game with Marathon, Famine, and Bankruptcy active. ContenderComplete a Daily Hardcore Challenge. Armored CoreComplete the game with 1 maximum HP or less. Lab RatComplete the game with at least 3 Prototype Augs and no System Restore. The CycleDeliver a boss' killing blow with its weakness. SurvivorComplete the game. Sorry To JetComplete a Rush Job. ChallengerComplete a Daily Challenge. PaydayComplete level 4. Long WeekendComplete level 8. Get EquippedComplete a Core set. 1 guideHonor and GloryComplete the game, succeeding every Glory Zone.