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