Here is the full list of all 30 Transformers: Devastation achievements worth 1,000 gamerscore.
Finished the lift battle in Chapter 2 without taking damage from Insecticons.
Completed all chapters on any difficulty using Bumblebee.
Defeated 100 enemies with Rush Attacks.
Completed all chapters on any difficulty using Optimus Prime.
Defeated 100 enemies with Vehicle/Dino Attacks.
Completed all chapters on any difficulty.
Completed all chapters on any difficulty using Sideswipe.
In chapter 4, defeated Motormaster while racing him.
Synthesized 10 weapons.
Used Focus 100 times.
Complete all chapters on any difficulty using Wheeljack.
Complete all chapters on any difficulty using Grimlock.
Complete all Challenge Mode missions on any difficulty.
Complete half of all Challenge Mode missions on any difficulty.
Collect all collectible items.
Collect half of all collectible items.
Complete all chapters, earning the highest rank, on difficulty COMMANDER or greater.
Use parrying to catch the following from an enemy: a boulder, a missile, and both drill types.
After dodging, quickly counter with a melee attack 100 times.
After dodging, quickly counter with a ranged attack 100 times.
Perform 100 successful head shots.
In chapter 1, on difficulty COMMANDER or greater, knock Devastator into a building 3 times.
In chapter 6, on diff. COMMANDER or greater, defeat Soundwave without defeating any cassettes.
In chapter 1, on difficulty COMMANDER or greater, defeat Devastator without taking damage.
In chapter 2, on difficulty COMMANDER or greater, destroy the shielding without taking damage.
In chapter 3, on difficulty COMMANDER or greater, defeat Blitzwing without taking damage.
In chapter 4, on difficulty COMMANDER or greater, defeat Menasor without taking damage.
In chapter 5, on difficulty COMMANDER or greater, defeat Shockwave without taking damage.
In chapter 6, on difficulty COMMANDER or greater, defeat Soundwave without taking damage.
In chapter 7, on difficulty COMMANDER or greater, defeat Megatron without taking damage.