Hard Mode:
Beat the game to unlock a more difficult game mode.

Special Missions:
You can play special Missions, including Tofu's adventure by accessing Windows 9x's registry editor.
At first you have to make a backup from your REGISTRY! In this part:

[HKEY_LOCAL_MACHINE\Software\CAPCOM\RESIDENT EVIL2] you have to make a change: value 8. so it now reads

HKEY_LOCAL_MACHINE\Software\CAPCOM\RESIDENT EVIL2\ VALUE 8

It will release all of the extended players : Tofu,Hunk,EX battle .

Alternate Outfits:
Reach the police station without collecting any items. In the passage under the main door to the station will be a zobmied Brad Vickers (the helicopter pilot from the first game). Kill him and steal the "Special Key" from his body. This allows you to unlock the locker in the dark room under the stairs. Leon will have two new outfits, and Claire has one outfit and a new weapon. Note: If this is done in game 1, Brad will appear there again in game 2.

Hard Mode:
Beat the game to unlock a more difficult level of game play under arrange and original modes.

Hidden Film:
There is film that can be developed in the dark room in the S.T.A.R.S. office, on the desk on the extreme left as you walk inside. To find it, simply search the desk approximately fifty times. Develop it to see a photo of Rebecca Chambers from the first Resident Evil game.

Hunk Scenario and Extreme Battle Mode:
Beat the game under the hard difficulty level with the best rank for Claire's A and B scenarios and Leon's A and B scenarios. Hunk is a soldier that must reach the second floor of the police station from the sewer with just battles and no puzzles. Extreme Battle mode unlocks Chris Redfield and Ada Wong as characters.

Tofu Scenario:
Beat the entire game (both A and B games) three times in under three hours for each section and achieve a grade A or B each time. In addition, you must unlock the "Hunk" special character before you start to play through for the third time. Tofu's mission is the same as Hunk's except you are armed only with a knife.

Unlimited Ammo:
While playing a game, go to your inventory selection select a weapon. It should say "Equip, Check, Combn". Hit "up, up, down, down, left, right, left, right, and aim. Once done a double zero should apear indicating the cheat has been done successfully.

Thanks to Revolution readers Alucard De Vere Courteney, Kaveh Mirzaei, Melvin Reiner Isko Street Boys, simon, killer, Allen Lee, Nathan Sun, Rick Walker, Hitman, David Pavey, Victor The Raptor and Richard!