Box Zombies Achievements Here is the full list of all 12 Box Zombies 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 Better TogetherPlay 10 co-op matches Locked ‘n LoadedUnlock every weapon in one life Feel the PowerUpgrade a weapon to level 5 I Ain’t WorriedFall below 10% health and regenerate back to full Party Time Bigger They Are, Harder They FallKill a mega zombie with a knife I swear it wasn’t on purpose…Get 5 teamkills with explosives Nice, now do that againGet 10 kills with one explosion Castles Made of SteelPlace 10 barricades and 5 sentries at one time Night OwlKill 1,000 zombies at night Harder than it LooksSurvive to round 10 on Apocalypse mode You Did ItUnlock every character