Here is the full list of all 30 TRANSFORMERS: Devastation achievements.
Completed all chapters, earning the highest rank, on difficulty COMMANDER or greater.
In chapter 6, on difficulty COMMANDER or greater, defeated Soundwave without taking damage.
In chapter 3, on difficulty COMMANDER or greater, defeated Blitzwing without taking damage.
Used parrying to catch all of the following from the enemy: a drill, boulder, and missile.
Completed all Challenge Mode missions on any difficulty.
Completed half of all Challenge Mode missions on any difficulty.
In chapter 7, on difficulty COMMANDER or greater, defeated Megatron without taking damage.
In chapter 6, on difficulty COMMANDER or greater, beat Soundwave without defeating any cassettes.
In chapter 5, on difficulty COMMANDER or greater, defeated Shockwave without taking damage.
In chapter 4, on difficulty COMMANDER or greater, defeated Menasor without taking damage.
In chapter 2, on difficulty COMMANDER or greater, destroyed the shielding without taking damage.
In chapter 1, on difficulty COMMANDER or greater, defeated Devastator without taking damage.
In chapter 1, on difficulty COMMANDER or greater, slammed Devastator into a building 3 or more times.
Completed all chapters on any difficulty using Sideswipe.
Collected all collectible items.
Finished the lift battle in Chapter 2 without taking damage from Insecticons.
Performed 100 successful head shots.
Completed all chapters on any difficulty using Bumblebee.
After dodging, quickly countered with a ranged attack 100 times.
After dodging, quickly countered with a melee attack 100 times.
Collected half of all collectible items.
Completed all chapters on any difficulty using Wheeljack.
Completed all chapters on any difficulty using Grimlock.
Defeated 100 enemies with Rush Attacks.
Defeated 100 enemies with Vehicle/Dino Attacks.
Completed all chapters on any difficulty using Optimus Prime.
In chapter 4, defeated Motormaster while racing him.
Completed all chapters on any difficulty.
Synthesize 10 weapons.
Used Focus 100 times.