Full list of all 59 Section 8: Prejudice (GFWL) achievements worth 1,250 gamerscore.
The base game contains 50 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 9 achievements worth 250 Gamerscore.
Win a ranked match on each map in Swarm
Win a ranked match in each map group in Conquest
Complete a ranked match with the highest Combat score using only the Pistol (12 or more players)
Reach level 50 in ranked matches
Reach level 2 in ranked matches
Win a ranked match
Earn each Badge in ranked matches
Earn each Feat in ranked matches
Win a ranked match while holding the enemy team to less than half your team's VP
Participate in each DCM successfully in ranked matches
Win a ranked match on Sky Dock. Requires Overdrive Map Pack.
Win a ranked match on Abaddon. Requires Overdrive Map Pack.
Win a ranked match in each map group in Assault. Requires Overdrive Map Pack.