Outbreak Zero Achievements Here is the full list of all 18 Outbreak Zero achievements.Filter Achievement View View Image viewList view Sort by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc What are achievement flags? Click to find outApply Outbreak Zero BeginsOutbreak Zero Begins Flawless ExecutionKill the first zombie without taking any damage Knowledge is PowerRead all documents scattered throughout the game Auditory ExplorerFind and listen to all audio logs in the game. Fallen GiantDefeat the first boss. Fallen Giant Flawless VictoryDefeat the first boss without taking any damage. Broken BeastDefeat the boss. Another One DownDefeat the boss without taking any damage. The Price of ProgressDefeat the third boss. Bosses fall. You don’t. One Step from MadnessDefeat the boss without taking any damage. Breaking the ChainYou’re not surviving anymore. You’re winning. You Call That a Boss?Another beast down. You’re more monster than man now. Six Feet Under"Dead things stay dead — when you're the one killing them. King of the DeadEverything died. Except you. Outbreak Zero: MasteredYou walked through hell untouched. Even death bowed. Professional SnooperUnlock all lockers in the game. Outbreak ZeroFinish the game. Outbreak Zero: HardcoreFinish the game on Hardcore Mode.