Here is the full list of all 65 Defense Grid 2 achievements.
Earn 100 Gold Medals on any missions.
Kill 50,000 aliens.
Build 100 Temporal towers.
Build 100 Missile towers.
Build 100 Concussion towers.
Build 100 Tesla towers.
Build 100 Laser towers.
Build 100 Meteor towers.
Survive 100 waves on any Super Grinder challenge mode.
Build 100 Inferno towers.
Survive 100 waves on Grinder challenge mode on any mission.
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.
Earn Bronze in a Co-Op Multiplayer mission.
Earn Gold in a Co-Op Multiplayer mission.
Build 100 Cannon towers.
Play a Competitive Multiplayer mission.
Earn a Victory in a DG Fighter Multiplayer mission.
Complete the single player campaign in Story Mode.
Earn a silver medal (or better) on all missions in the Story mode.
Earn a gold medal on every mission in Story mode.
Using only level 1 towers, Win any Chapter 4 (or later) mission.
Sell 10 towers.
Sell 10 towers or more in a single mission.
Build 100 Gun towers.
Build 50 towers of any type in one mission.
Kill 10,000 aliens.
Kill an alien boss creature. (Juggernaut, Rumbler, Turtle, or Crasher)
Use the command shuttle to move 6 map sections in Mission 6.
Win a Gold medal on mission 19 without using the Command Shuttle.
Use the Core Teleport special weapon (Professor Taylor).
Build every tower and every upgrade for each tower.
Build and fully upgrade each tower type in one mission.
Use the Resource Reinforcement Special Weapon (Professor Briel).
Use the Precision Targeting Special Weapon (Rear Admiral Phillips).
Win a chapter 4 (or later) mission with level 3 towers only and no selling.
Beat a Chapter 4 mission or higher with zero cores captured.
Use the Temporal Cannon Special Weapon (Colonel Rissler).
Build 1 of each tower type in any single mission.
Build 100 Boost towers.
Enable a Tower Augmentation Item on 10 Towers.
Win a mission with at least 5,000 resources remaining.
Win a mission with at least 10,000 resources remaining.
Earn a silver (or better) medal.
Earn a Gold Medal.
Use the Reload Checkpoint option.
Use the reload checkpoint option five times in a single mission.
Use the speed up control at 3x for a total of 60 seconds in any mission.
Use the Tower Overcharge Special Weapon (Advisor Zacara).
Kill 1000 aliens.
Finish all the missions in Chapter 1 in Story Mode.
Build 20 towers of any type in one mission.
Enable a Tower Augmentation item on any tower.
Recover a loose core.
Kill an alien carrying a power core.
Save a core that is less than 10 seconds away from the map's exit point.
Kill 100 aliens.
Win a mission with at least 1,000 resources remaining.
Upgrade a level 1 tower to a level 2 tower.
Use the Orbital Laser Special Weapon (General Cai).
Win any mission without selling any towers.
Inspect 10 aliens.
Earn Bronze on a Single Player mission.
Kill 1 alien.