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