Resident Evil: Deadly Silence cheats and cheat codes for Nintendo DS

Characters in Multiplayer:
Barry - Win the game with Jill once in Rebirth Mode
Forest Speyer - Finish Classic Mode as Jill.
Kenneth J. Sullivan - Finish Classic Mode as Chris.
Rebecca Chambers - Finish Rebirth Mode as Chris.
Wesker - Get a Rank B in Masters of Knifing
Enrico Marini - Clear all Co-op levels in Wireless Play
Richard Aiken - Clear all Versus Mode levels in Wireless Play

Knifing minigame:
Beat the game once to unlock the five level mini game Masters of Knifing

Rocket Launcher 
If you finished the game less than an 3 hour, you will unlock 
the rocket launcher.

Easy mode 
Go to the main menu. Hold down Right until "New Game" option become
green colored. If you start a game, you can play with double amount of 
items like ammo, ink ribbon. (sprays and herbs will not be duplicated)

After you selecting "New Game", hold down Right until "Rebirth Mode" 
options become green colored. You can play easy Rebirth and Classic 
modes also.

Unlock Albert Wesker in wireless mode:
Play with Masters Of Knifing mini-game and reach "B" or greater rank.

Unlock alternate clothes
Finish the Jill's scenario. Barry Burton has to be survive.
or 
Finish Chris scenario. Rebecca Chambers has to be survive.

After save your game. Load back to the cleared game file 
to start with the new Key in your inventory. 
Go to Mansion 1F and use that key to unlock the closet.