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