Here is the full list of all 65 Defense Grid 2 achievements.
Earn a gold medal on every mission in Story mode.
Earn a silver medal (or better) on all missions in the Story mode.
Complete the single player campaign in Story Mode.
Build 100 Boost towers.
Win a Gold medal on mission 19 without using the Command Shuttle.
Use the Core Teleport special weapon (Professor Taylor).
Build 100 Gun towers.
Using only Cannon towers, Win any chapter 4 (or later) mission.
Using only Inferno towers, Win any chapter 4 (or later) mission.
Build 50 towers of any type in one mission.
Using only Gun towers, Win any chapter 4 (or later) mission.
Using only level 1 towers, Win any Chapter 4 (or later) mission.
Build 100 Cannon towers.
Use the Precision Targeting Special Weapon (Rear Admiral Phillips).
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.
Survive 100 waves on any Super Grinder challenge mode.
Kill 10,000 aliens.
Survive 100 waves on Grinder challenge mode on any mission.
Use the command shuttle to move 6 map sections in Mission 6.
Earn Gold in a Co-Op Multiplayer mission.
Earn Bronze in a Co-Op Multiplayer mission.
Earn a Victory in a DG Fighter Multiplayer mission.
Play a Competitive Multiplayer mission.
Build 20 towers of any type in one mission.
Use the Temporal Cannon Special Weapon (Colonel Rissler).
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.
Use the Reload Checkpoint option.
Use the reload checkpoint option five times in a single mission.
Kill an alien boss creature. (Juggernaut, Rumbler, Turtle, or Crasher)
Use the Resource Reinforcement Special Weapon (Professor Briel).
Use the Tower Overcharge Special Weapon (Advisor Zacara).
Sell 10 towers or more in a single mission.
Inspect 10 aliens.
Sell 10 towers.
Win a mission with at least 10,000 resources remaining.
Enable a Tower Augmentation item on any tower.
Finish all the missions in Chapter 1 in Story Mode.
Kill 1000 aliens.
Save a core that is less than 10 seconds away from the map's exit point.
Kill 100 aliens.
Win a mission with at least 5,000 resources remaining.
Recover a loose core.
Kill an alien carrying a power core.
Use the speed up control at 3x for a total of 60 seconds in any mission.
Earn a silver (or better) medal.
Earn a Gold Medal.
Win a mission with at least 1,000 resources remaining.
Upgrade a level 1 tower to a level 2 tower.
Use the Orbital Laser Special Weapon (General Cai).
Win any mission without selling any towers.
Earn Bronze on a Single Player mission.
Kill 1 alien.
Kill 50,000 aliens.
Build 100 Inferno towers.
Build 100 Laser towers.
Build 100 Temporal towers.
Build 100 Meteor towers.
Build 100 Tesla towers.
Build 100 Missile towers.
Build 100 Concussion towers.
Earn 100 Gold Medals on any missions.
Enable a Tower Augmentation Item on 10 Towers.