Desktop Siege Achievements Here is the full list of all 6 Desktop Siege 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 Blood!You killed the first monster Got an eye on youBuilt the first watchtower Chain Lighting!Upgraded Gatling Towers to Chain Gatling Towers Mega Kills!Technically, they already dead before you killed them Allies are proud of youUpgraded Beam Towers to Prism Beam Towers Thanks for playing!You have upgraded everything in the game!