This cheat will work on both PS3 and Xbox 360. It helps if you have some valuable items before you start this cheat, like a rotten egg or something.
Step 1: Start up a game on chapter 2-2 with no items in either Chris' or Sheva's inventory. It's best to use this chapter because its close to the beginning and it has no cut scene at the start, threrefore speeding up the process.
Step 2: When you're in the game, press start on your second controller and join as player 2, when it asks you to load you'll need to load a game save which has your rotten eggs or any other item you plan on duplicating.
Step3: When player 2 comes into the game, Sheva should have the items in her inventory. Walk up to Chris and pass him all the items you want to duplicate.
Step4: Now that the items have been passed from player 2 to player 1 - Press start on player 1's controller. Go to quit and you will get the message "All unsaved progress will be lost" - Press yes. Now it's going to say "Overwrite current equipment and status" - Press YES on player 1, and NO on player 2.
Now Chris has been Saved with his new eggs, and Sheva gets to keep her eggs also. You can repeat this process as many times as you would like. It is possible to carry 45 rotten eggs in your inventory, so you can trade a max of 90,000 coins each round. Of course this can also be done online, and instead of player 2 pressing start, you just have Sheva join your game over Live or PSN and do the exact same thing.
Unlockable -------------------------------------How to Unlock Clubbin' Sheva--------------------------------Beat the game S.T.A.R.S. Chris-------------------------------Shoot 25 BSAA emblems Safari Chris------------------------------------Beat the game Tribal Sheva-----------------------------------Shoot 30 BSAA emblems
Unlockable -------------------------------------------How to Unlock Chris Redfield Ornament---------------------------Sign in to Home Jill Valentine Ornament-----------------------------Beat the game on veteran Sheva Alomar Ornament---------------------------Beat the game on normal Treasure Chest Ornament-------------------------Collect all treasures in the game
Unlockable -----------------------------How to Unlock
History of Resident Evil---------------Beat the game on any difficulty. Mercenaries Mode---------------------Finish the game in any difficulty. New Game+----------------------------Finish the game in any difficulty. Playing with Sheva---------------------Finish the game in any difficulty. Professional Difficulty------------------Beat every chapter on Veteran. Unlimited ammunition for a weapon---Max out the upgrades for that Gun.
Chris (Safari)-----------------------Get an A Rank or higher in The Village Chris (Stars)------------------------Get an A Rank or higher in Experimental Facility Jill (Battle Suit)---------------------Get an A Rank or higher in Ship Deck Jill (BSAA)---------------------------Get an A Rank or higher in Public Assembly Sheva (Clubin)----------------------Get an A Rank or higher in Ancient Ruins Sheva (Tribal)-----------------------Get an A Rank or higher in Missile Area Wesker (Midnight)-------------------Get an A Rank or higher in The Mines Wesker (STARS)---------------------Get an A Rank or higher in The Prison