9 Hard Levels beaten, not a single life lost
9 Hard Levels beaten
Beat 9 Medium Levels, no lives lost
Beat a Hard Level
9 Medium Levels beaten
Upgrade a Vortex Tower to Level 7
Placed one of each type of Turret on a Level
Beat a Medium Level
Owned all Easy Levels, no lives lost
9 Easy Levels beaten
Score a x50 Multiplier Bonus from a Creep
Upgraded a Shock Tower to Level 7
Upgraded a Missile Tower to Level 7
Upgrade a Blaster Tower to level 7
Upgraded a Laser Tower to Level 7
Beat an Easy Level