Rat Simulator Achievements Here is the full list of all 10 Rat Simulator achievements.Filter Achievement View View Image viewList view Sort by Won first then 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 AllWonNot wonLord of RatsYou now rule over the suburban neighborhood with your fellow rat companions. 17 March 2025 - Add a guidePestDefeat a boss. 17 March 2025 - Add a guideProfessor RatInfect more than four houses. 17 March 2025 - Add a guideShare the LoveInfect the house with your rat buddy. 17 March 2025 - Add a guideScientific RatUpgrade your rat's capabilities. 16 March 2025 - Add a guideRatsInfect a house. 16 March 2025 - Add a guideFellow RatsSave a Rat. 16 March 2025 - Add a guideExterminatedNo more rats.. 16 March 2025 - Add a guidePoisonousInfected the food meant for humans! 16 March 2025 - Add a guidePlague BearerPoison a human. 16 March 2025 - Add a guide