Highway Cleaners Achievements Here is the full list of all 6 Highway Cleaners 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 First KillKill the first zombie Big boom!Kill 10 zombies with one rocket Tik TakKill 25 zombies with a time bomb Still AliveUse respawn card New mechanic in the townUpgrade your car for the first time Zombie DestroyerGet all the upgrades for your car