Rat Simulator Achievements Here is the full list of all 10 Rat Simulator 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 RatsInfect a house. Plague BearerPoison a human. ExterminatedNo more rats.. Professor RatInfect more than four houses. PoisonousInfected the food meant for humans! PestDefeat a boss. Scientific RatUpgrade your rat's capabilities. Fellow RatsSave a Rat. Share the LoveInfect the house with your rat buddy. Lord of RatsYou now rule over the suburban neighborhood with your fellow rat companions.