911: Prey Achievements Full list of all 10 911: Prey achievements worth 1,000 gamerscore. It takes around 0-0.5 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 10 Offline Mode 10 Single Player 10 Main Storyline Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply Escape from the CageEscape from the Cage 2 guidesMysterious CultCollect Mysterious Cult Solve the puzzleSolve the puzzle Find a glass cutterFind a glass cutter Secrets of GreenwoodCollect Secrets of Greenwood Rat PoisonCollect Rat Poison Poison MemoCollect Poison Memo Frank FlowersCollect Frank Flowers CheeseCollect Cheese Jacob is aliveJacob is alive 1 guide