Resident Evil: The Darkside Chronicles - Chris39s Caucasus outfit

Chris's Mafia outfit:
Get an S-rank on Game of Oblivion Chapter 7 (final) on Normal difficulty

Krauser's Detective outfit:
Get an S-rank on Operation Javier Chapters 1-5 on Normal difficulty

Krauser's Mercenary outfit:
Beat Operation Javier Chapter 5 on Normal mode.

Leon's Agent outfit:
Beat Operation Javier Chapter 7 on Hard Mode.

Leon's Detective outfit:
Get an S-rank on Operation Javier Chapters 1-5 on Normal difficulty

Leon's R.P.D. outfit:
Beat Operation Javier Chapter 7 on Hard Mode.

Krauser Bonus Scenarios:
Beat Operation Javier Chapter 7 in under 10 minutes

Linear Launcher:
Complete the game on Hard Mode

Tofu Mode:
Complete Operation Javier Chapter 5 on Normal Mode.

Very Easy Mode:
Continue 10 times in easy mode

Very Hard Mode:
Beat the game on Hard.