*There are 23 secret achievements. show
Achievement Description Value 1-2-3-GO! (secret) Players simultaneously killed 2 unaware targets 10 Aggro-er You took the Aggro for 100 Flank kills 40 And now what? (secret) Complete the Campaign 25 And stay down (secret) Perform 10 melee kills on wounded targets 10 Armed to the Teeth Buy All Guns 25 Army Of TWO™ Perform 250 Flank, Surprise and/or Tag Team kills 75 Art is not a crime (secret) Create your own Custom Mask 10 Backstabbing Bastard (secret) Perform 50 Backstabs 10 Barbarian Destroyed 500 objects 10 Behind enemies lines (secret) Complete Enemy Territory 10 Blood Sport Perform 100 melee kills 25 Blood, Sweat and Guns Level up to Rank 25 50 Combo Master Perform a x10 Co-op Combo 30 Cover Hopper Perform 10 cover to cover transition in a row 10 David vs. Goliath (secret) Kill 10 Brutes in Physical Confrontation 10 Deep Pockets Buy all Weapons, Tattoos, Masks and Outfits 100 Demolition Derby (secret) Destroy 50 cars 10 Double Trouble 200 targets killed in double Overkill 50 Drugs are for losers (secret) Complete Narco Hell 10 Environmentalist (secret) Kill 3 targets or more using an explosive object in any level 10 Fashion Police (secret) Perform 50 Hat Shots 10 First Blood (secret) Make your first kill as a rookie (in Cause and Effect mission) 10 Forgive our sins (secret) Complete Salvation 10 From bad to worse (secret) Complete Outside Contact 10 FUBAR (secret) Complete Rally Point 10 Headache Perform 100 Headshots 30 Just a scratch You didn’t go wounded once in a mission (medium, hard or insane) 25 Keep it up! Level up to Rank 15 30 Let ‘er Rip 100 targets killed using either an MMG or an MGL 20 Let's do this (secret) Complete New Blood 10 Look at you! Buy All Outfits 25 Look mom, I made it! Complete the game on Insane 100 Massacre in Paradise (secret) Complete Last Resort 10 Melee all day! Perform a melee kill while you're in Overkill 10 Michelangelo (secret) Apply the maximum number of layers on a customized mask 10 Money Shot (secret) Headshot a target while blind firing 10 Moocher 200 targets killed in single Overkill (Triggered by your partner) 20 My Baby Fully customize a weapon with 6 customizable parts or more 10 Now what? (secret) Complete Cause and Effect 10 Overkiller 200 targets killed in single Overkill (Triggered by you) 20 Party Pooper (secret) Kill 3 targets with 1 grenade 10 Revenge is a bitch (secret) Complete Confrontation 10 Sir, yes sir! Level up to Rank 5 20 TWO heads Complete a mission (excluding New Blood) with a human partner 10 War comes home (secret) Complete Assault 10 Whack-A-Mask 500 targets killed while in cover 20
Contributed By: Guard Master.