Here is the full list of all 50 Transformers: Fall of Cybertron achievements worth 1,000 gamerscore.
Complete Chapter V
Chapter V: Shoot a Sniper out of the air with a scoped weapon
Complete Chapter IV
Open fifteen Armory Recreators in Campaign or Escalation
Complete Chapter III
Fully upgrade one weapon
Complete Chapter II
Chapter II: Save two Autobots when Optimus is downed by the first Leaper
Earn MVP in any game mode during a public Multiplayer match
Kill 6 different opposing players in a TDM game during a public Multiplayer match
Complete Chapter I
Personally capture all 3 nodes in a conquest game during a public Multiplayer match
Create a custom character in Multiplayer
Complete Chapter VI on any difficulty
Complete Chapter VII on any difficulty
Complete Chapter VIII on any difficulty
Complete Chapter IX on any difficulty
Complete Chapter X on any difficulty
Complete Chapter XI on any difficulty
Complete Chapter XII on any difficulty
Complete Chapter XIII as Optimus Prime on any difficulty
Complete Chapter XIII as Megatron on any difficulty
Complete Campaign - Easy
Complete Campaign - Normal
Complete Campaign - Hard
Chapter III: Take out a cluster of five Decepticons using Metroplex's Air Strike
Chapter IV: Sneak through the Trash Compactor Facility undetected
Chapter VI: Destroy all of the homing mines chasing Blast Off before they self destruct
Chapter VII: Ram a jet (on the ground or in the air)
Chapter VIII: Melee an enemy through the goal post
Chapter IX: Destroy all images of Starscream and his Statues
Chapter X: Kill five Autobots with a single hover slam attack
Chapter XI: Hack all of the security terminals before the Decepticons can activate them
Chapter XII: Kill a Leaper in the air with an explosive barrel
Spend 250,000 Energon in the Teletraan 1 store
Fully upgrade all weapons
Rate all weapons, weapon upgrades, and equipment
Purchase all weapons and perks
Collect all blueprints
Collect all audio logs
Reach max level in a single class
Reach max level in all four classes
Unlock Prime Mode
Capture three flags in a single CTF game during a public Multiplayer match
Return five heads at once in a headhunter game during a public Multiplayer match
Complete wave 15 in Escalation (Ignition)
Complete wave 15 in Escalation (DownFall)
Complete wave 15 in Escalation (Oblivion)
Complete wave 15 in Escalation (Ancients)
Spend 100,000 credits in Escalation