Here is the full list of all 15 RIPD: The Game achievements.
Use Salary to Purchase All Weapons
Fully Upgrade All Weapons
Send Hayes to Judgement
Complete All Maps on the Hardest Difficulty
Soul Kill 100 Deados
Execute 10 Deado Criminals
Unlock the Final Showdown with Hayes
Fully Upgrade One Weapon
Win Every Bet
Beatdown 50 Deados Using Melee
Complete Every Challenge In One Level
Arrest 10 Deado Criminals
Complete Your First Challenge
Win Your First Bet
Kill 65 Deados