Hints
Achievements
Bling (20): Gain a Gold Badge in 5 Player Awards
Faction Leader (50): Get To Rank 20
Going Up in the World (15): Get To Rank 10
Helping hands (5): Complete Your First Local Multiplayer Game
Scrap Metal (10): Get a Quad Kill in the Training Missions
Take That, Winters! (40): Gain a Gold Star in All Training Missions
Taste of Victory (5): Win an Xbox LIVE Game
The Black Hole (15): Kill All Other Players With The Singularity Bomb in a 4 Player Xbox Live Game
The Running Man (10): Earn a Gold Star in a Survival Training Mission Without Using Any Weapons
The Skills to Pay the Bills (15): Unlock All of the Training Missions
Total Carnage (10): Kill 5 Opponents in a Row Without Dying in an Xbox LIVE Multiplayer Game
Welcome to the Faction (5): Gain Your First Rank

Armageddon Pack DLC Achievements
A Taste of Armageddon (10): Earn at least a Bronze Star in all the Armageddon Pack Training
 Missions
Rampage (15): Destroy 35 Enemies in the Frostbite Training Mission

Origins Pack DLC Achievements
A Taste of Origins (10): Earn at least a Bronze Star in all the Origins Pack Training
Missions
Tormentor (15): In Race Mode, Kill a Player 3 Times When They're on Their Last Lap