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