Destroy 300 destructible objects in Mission 7,8
Earn one billion dollars in total in ranked matches.
Destroy 500 barrels in ranked SSC Challenge matches
Win every stage of a ranked three round SSC Challenge match
Achieve 75% accuracy at the conclusion of a ranked three round SSC Challenge match
Win a ranked SSC Challenge match
Complete 20 minor objectives in a ranked match.
Complete a ranked match without ever needing to be revived.
Win a ranked match without purchasing any additional weapons.
Buy the 'pack 8' gun pack in a multiplayer ranked match
Finish playing a versus ranked match.
Kill 50 enemies total in Co-op Riot Shield.
Kill Dalton in less than 40 seconds
Continue playing to unlock this secret achievement.
Final blow to Dalton is a headshot with a pimped .44 MODEL 29 handgun
Earn one million dollars in total over the course of campaign mode.
Collect all of the information cases in the entire game.
Kill 25 Martyrs by shooting the Bomb Packs on their chests.
Kill 75 enemies while in the stealth mode of Overkill.
Drag and heal your partner 25 times.
Kill 100 enemies while in the power mode of Overkill.
Kill 100 enemies total using Sniper Rifles.
Kill 250 enemies total using SMGs.
Complete all missions as a Professional.
Kill 25 enemies total using RPGs.
Kill 150 enemies total using Handguns.
Purchase the MP7, M134, DAO-X Protecta, MGL MK-X, and the M107 Light Fifty.
Kill 25 Heavy Armor enemies.
Kill 250 enemies total using Machine Guns.
Kill 30 enemies using the Riot Shield melee attack
Purchase every mask variant.
Complete all missions with the Partner AI.
Kill 250 enemies total using Shotguns.
Kill 50 enemies total in Back-to-Back.
Kill 5 enemies total using Co-op Snipe.
Kill 250 enemies total using Assault Rifles.
Kill 50 enemies total using the Melee Attack.
Spend 1 minute straight at full Aggro.
Purchase 3 weapons.
Heal your partner for the first time. Training does not count.