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