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.
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.
Enable a Tower Augmentation Item on 10 Towers.
Build 100 Missile towers.
Build 100 Temporal towers.
Build 100 Meteor towers.
Use the command shuttle to move 6 map sections in Mission 6.
Build 100 Tesla towers.
Build 100 Laser towers.
Enable a Tower Augmentation item on any tower.
Survive 100 waves on any Super Grinder challenge mode.
Build 100 Cannon towers.
Build 100 Concussion towers.
Using only level 1 towers, Win any Chapter 4 (or later) mission.
Using only Cannon towers, Win any chapter 4 (or later) mission.
Win a chapter 4 (or later) mission with level 3 towers only and no selling.
Use the Reload Checkpoint option.
Use the reload checkpoint option five times in a single mission.
Using only Inferno towers, Win any chapter 4 (or later) mission.
Build 100 Inferno towers.
Build 100 Gun towers.
Build 50 towers of any type in one mission.
Inspect 10 aliens.
Using only Gun towers, Win any chapter 4 (or later) mission.
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.
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 Core Teleport special weapon (Professor Taylor).
Build every tower and every upgrade for each tower.
Build and fully upgrade each tower type in one mission.
Use the Precision Targeting Special Weapon (Rear Admiral Phillips).
Build 100 Boost towers.
Beat a Chapter 4 mission or higher with zero cores captured.
Use the Temporal Cannon Special Weapon (Colonel Rissler).
Build 20 towers of any type in one mission.
Build 1 of each tower type in any single mission.
Use the Resource Reinforcement Special Weapon (Professor Briel).
Kill an alien boss creature. (Juggernaut, Rumbler, Turtle, or Crasher)
Sell 10 towers or more in a single mission.
Use the Tower Overcharge Special Weapon (Advisor Zacara).
Use the Orbital Laser Special Weapon (General Cai).
Finish all the missions in Chapter 1 in Story Mode.
Kill 1000 aliens.
Sell 10 towers.
Win a mission with at least 5,000 resources remaining.
Win a mission with at least 10,000 resources remaining.
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.
Kill 100 aliens.
Earn a Gold Medal.
Win a mission with at least 1,000 resources remaining.
Earn a silver (or better) medal.
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 Bronze on a Single Player mission.
Kill 1 alien.