Zombies Invasion Achievements Here is the full list of all 6 Zombies Invasion 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 50 zombiesKill 50 zombies 100 zombiesKill 100 zombies 300 zombiesKill 300 zombies 500 zombiesKill 500 zombies 800 zombiesKill 800 zombies 1000 zombiesKill 1000 zombies