Yes, you can wear different outfits in Shank, and changing your outfit in the game not only affects your appearance but also Shank’s head icon in the health meter.
1. The Original Shank
You don’t need to unlock
2. Kung Fu Shank
Get 1000 kills to unlock Kung Fu Shank constume.
3. Wildman Shank
Beat the game on Hard Mode to get Wildman Shank costume.
4. Spartan Shank
Beat the co op mode with a friend to get Spartan Shank costume.
5. Red Pajamas Shank
Make a 150 hit combo. Now that may sound hard, but it isn’t. You can use easy trick to do 150+ combos.
Play Co Op.
Get one enemy left on the screen.
One player grabs the enemy using his chains.
Other fires his dual pistols on the enemy being chocked.
Simple ? You can refer to this