Here is the full list of all 65 Defense Grid 2 achievements.
Earn Gold in a Co-Op Multiplayer mission.
Earn 100 Gold Medals on any missions.
Kill 50,000 aliens.
Build 100 Temporal towers.
Build 100 Tesla towers.
Survive 100 waves on any Super Grinder challenge mode.
Build 100 Inferno towers.
Build 100 Laser towers.
Survive 100 waves on Grinder challenge mode on any mission.
Earn Bronze in a Co-Op Multiplayer mission.
Build 100 Meteor towers.
Build 100 Missile towers.
Play a Competitive Multiplayer mission.
Earn a Victory in a DG Fighter Multiplayer mission.
Use the Core Teleport special weapon (Professor Taylor).
Use the Precision Targeting Special Weapon (Rear Admiral Phillips).
Use the Temporal Cannon Special Weapon (Colonel Rissler).
Using only level 1 towers, Win any Chapter 4 (or later) mission.
Use the Reload Checkpoint option.
Use the reload checkpoint option five times in a single mission.
Use the Tower Overcharge Special Weapon (Advisor Zacara).
Earn a silver medal (or better) on all missions in the Story mode.
Earn a gold medal on every mission in Story mode.
Build 100 Concussion towers.
Win a Gold medal on mission 19 without using the Command Shuttle.
Using only Cannon towers, Win any chapter 4 (or later) mission.
Using only Inferno towers, Win any chapter 4 (or later) mission.
Using only Gun towers, Win any chapter 4 (or later) mission.
Build 100 Cannon towers.
Use the command shuttle to move 6 map sections in Mission 6.
Sell 10 towers.
Kill an alien boss creature. (Juggernaut, Rumbler, Turtle, or Crasher)
Kill 10,000 aliens.
Earn a silver (or better) medal.
Earn a Gold Medal.
Complete the single player campaign in Story Mode.
Use the speed up control at 3x for a total of 60 seconds in any mission.
Finish all the missions in Chapter 1 in Story Mode.
Build 100 Gun towers.
Build every tower and every upgrade for each tower.
Build and fully upgrade each tower type in one mission.
Build 50 towers of any type in one mission.
Sell 10 towers or more in a single mission.
Enable a Tower Augmentation Item on 10 Towers.
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.
Build 1 of each tower type in any single mission.
Win a mission with at least 10,000 resources remaining.
Build 100 Boost towers.
Win a mission with at least 5,000 resources remaining.
Use the Resource Reinforcement Special Weapon (Professor Briel).
Kill 1000 aliens.
Inspect 10 aliens.
Build 20 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.
Recover a loose core.
Kill an alien carrying a power core.
Win any mission without selling any towers.
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).
Earn Bronze on a Single Player mission.
Kill 1 alien.