Island Defense Achievements Here is the full list of all 16 Island Defense 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 Master of CombatComplete level with 3 stars Special ForcesComplete the game Master of WarComplete level with 3 stars on Hard Mode Elite ForcesComplete all levels on Hard Mode DominationComplete all levels with 3 stars Defenders BrotherhoodUnlock all Heros HeroLevel up a hero to level 15 Absolute HeroLevel up all heroes to level 15 BreakthroughUpgrade tower in the Laboratory Master of TowersUpgrade all towers to level 5 Minigun MasterUpgrade Minigun to level 5 Ice Tower MasterUpgrade Ice Tower to level 5 Tesla MasterUpgrade Tesla to level 5 Flame Squad MasterUpgrade Flame Squad to level 5 Rocktet Launcher MasterUpgrade Rocket Launcher to level 5 Sniper MasterUpgrade Sniper to level 5