Here is the full list of all 65 Defense Grid 2 achievements.
Using only Inferno towers, Win any chapter 4 (or later) mission.
Build 100 Cannon towers.
Using only Cannon towers, Win any chapter 4 (or later) mission.
Build 100 Inferno towers.
Using only Gun towers, Win any chapter 4 (or later) mission.
Win a mission with at least 10,000 resources remaining.
Use the Core Teleport special weapon (Professor Taylor).
Build 100 Meteor towers.
Earn a gold medal on every mission in Story mode.
Complete the single player campaign in Story Mode.
Earn a silver medal (or better) on all missions in the Story mode.
Enable a Tower Augmentation Item on 10 Towers.
Survive 100 waves on any Super Grinder challenge mode.
Build 100 Temporal towers.
Build 100 Concussion towers.
Build every tower and every upgrade for each tower.
Build and fully upgrade each tower type in one mission.
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 1 of each tower type in any single mission.
Win a Gold medal on mission 19 without using the Command Shuttle.
Kill 10,000 aliens.
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.
Use the Precision Targeting Special Weapon (Rear Admiral Phillips).
Build 100 Boost towers.
Build 100 Gun towers.
Use the Temporal Cannon Special Weapon (Colonel Rissler).
Use the command shuttle to move 6 map sections in Mission 6.
Use the Tower Overcharge Special Weapon (Advisor Zacara).
Inspect 10 aliens.
Kill an alien boss creature. (Juggernaut, Rumbler, Turtle, or Crasher)
Use the Reload Checkpoint option.
Use the reload checkpoint option five times in a single mission.
Use the Resource Reinforcement Special Weapon (Professor Briel).
Build 50 towers of any type in one mission.
Use the Orbital Laser Special Weapon (General Cai).
Enable a Tower Augmentation item on any tower.
Kill 1000 aliens.
Sell 10 towers.
Win a mission with at least 5,000 resources remaining.
Sell 10 towers or more in a single mission.
Finish all the missions in Chapter 1 in Story Mode.
Earn a Gold Medal.
Build 20 towers of any type in one mission.
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.
Kill 1 alien.
Earn a silver (or better) medal.
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 Bronze on a Single Player mission.
Kill 50,000 aliens.
Build 100 Laser towers.
Build 100 Tesla towers.
Build 100 Missile towers.
Using only level 1 towers, Win any Chapter 4 (or later) mission.
Earn 100 Gold Medals on any missions.
Play a Competitive Multiplayer mission.
Earn a Victory in a DG Fighter Multiplayer mission.