Use the command shuttle to move 6 map sections in Mission 6.
Survive 100 waves on any Super Grinder challenge mode.
Win a mission with at least 10,000 resources remaining.
Build and fully upgrade each tower type in one mission.
Use the reload checkpoint option five times in a single mission.
Win a mission with at least 5,000 resources remaining.
Build every tower and every upgrade for each tower.
Inspect 10 aliens.
Build 100 Tesla towers.
Build 100 Boost towers.
Build 100 Concussion towers.
Survive 100 waves on Grinder challenge mode on any mission.
Build 100 Laser towers.
Build 100 Meteor towers.
Build 100 Temporal towers.
Use the speed up control at 3x for a total of 60 seconds in any mission.
Kill 10,000 aliens.
Complete the single player campaign in Story Mode.
Use the Precision Targeting Special Weapon (Rear Admiral Phillips).
Use the Core Teleport special weapon (Professor Taylor).
Use the Temporal Cannon Special Weapon (Colonel Rissler).
Build 100 Inferno towers.
Build 100 Missile towers.
Sell 10 towers or more in a single mission.
Build 100 Cannon towers.
Beat a Chapter 4 mission or higher with zero cores captured.
Build at least 1 of each tower type in any single mission.
Build 50 towers of any type in one mission.
Sell 10 towers.
Build 100 Gun towers.
Use the Tower Overcharge Special Weapon (Advisor Zacara).
Enable a Tower Augmentation item on any tower.
Kill an alien boss creature. (Juggernaut, Rumbler, Turtle, or Crasher)
Use the Resource Reinforcement Special Weapon (Professor Briel).
Use the Reload Checkpoint option.
Kill 1000 aliens.
Finish all the missions in Chapter 1 in Story Mode.
Save a core that is less than 10 seconds away from the map's exit point.
Kill 100 aliens.
Earn a Gold Medal.
Recover a loose core.
Kill an alien carrying a power core.
Build 20 towers of any type in one mission.
Use the Orbital Laser Special Weapon (General Cai).
Earn a silver (or better) medal.
Kill 1 alien.
Win any mission without selling any towers.
Win a mission with at least 1,000 resources remaining.
Earn a Bronze (or better) medal in a Single Player Mission.
Upgrade a level 1 tower to a level 2 tower.
Using only Inferno towers, Win any Chapter 4 (or later) mission.
Earn a gold medal on every mission in Story mode.
Win a chapter 4 (or later) mission with level 3 towers only and no selling.
Earn a Gold medal in a Coordinated Defense Multiplayer Mission.
Using only Gun towers, Win any chapter 4 (or later) mission.
Earn 100 Gold Medals on any missions.
Using only level 1 towers, Win any Chapter 4 (or later) mission.
Earn a silver medal (or better) on all missions in the Story mode.
Using only Cannon towers, Win any Chapter 4 (or later) mission.
Enable a Tower Augmentation Item on 10 Towers.
Win a Gold medal on Mission 19 without using the Command Shuttle.
Play a DG Fighter Multiplayer mission.
Earn a Victory in a DG FighterMultiplayer mission.
Kill 50,000 aliens.
Earn a Bronze (or better) medal in a Coordinated Defense Multiplayer mission.
294
2526
215405
8972
1971
409
134
12