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