Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Absolute Hero	Level up all heroes to level 15.
Breakthrough	Upgrade tower in the Laboratory.
Defenders Brotherhood	Unlock all Heros.
Domination	Complete all levels with 3 stars.
Elite Forces	Complete all levels on Hard Mode.
Flame Squad Master	Upgrade Flame Squad to level 5.
Hero	Level up a hero to level 15.
Ice Tower Master	Upgrade Ice Tower to level 5.
Master of Combat	Complete level with 3 stars.
Master of Towers	Upgrade all towers to level 5.
Master of War	Complete level with 3 stars on Hard Mode.
Minigun Master	Upgrade Minigun to level 5.
Rocktet Launcher Master	Upgrade Rocket Launcher to level 5.
Sniper Master	Upgrade Sniper to level 5.
Special Forces	Complete the game.
Tesla Master	Upgrade Tesla to level 5.