|Destroy at least one boss alien.|
You will encounter your first boss type alien in the third mission of the story mode. Simply place your towers strategically and he'll be an easy kill.
|Rate this achievement||Average Rating|
|You need to register before being able to post comments.|
|You need to log in or register to use MyAchievements.|
|You need to log in or register to rate games.|
User Score is based on 340 user ratings.