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