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