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