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