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