Press and hold R, then press UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, B, A, START.

Tony Hawk's Pro Skater 2 Unlock Cheats
To unlock all of the Cheats in the Cheat menu (in the Options screen), enter the following button presses at the main menu or while paused during gameplay.

Press and hold R, then press B, A, DOWN, A, START, START, B, A, RIGHT, B, RIGHT, A, UP, LEFT.

The following cheats will now be available: Perfect Balance, Always Special, Stud Mode, Sim Mode, Moon Physics, and Always Zoom.

Tony Hawk's Pro Skater 2 Unlock All Levels
To unlock all of the levels in the game, enter the following button presses at the main menu or while paused during gameplay.

Press and hold R, then press A, START, A, RIGHT, UP, UP, DOWN, DOWN, UP, UP, DOWN.

Tony Hawk's Pro Skater 2 Unlock Spider-Man Wall Crawl
To unlock the Spider-Man Wallcrawl feature, enter the following button presses at the main menu or while paused during gameplay.

Press and hold R, then press RIGHT, A, DOWN, B, A, START, DOWN, A, RIGHT, DOWN.

Whenever you wallride with this feature enabled, Spidey will continue climbing up the wall until he runs out of vertical surface. Note: This code can lock up your game.

Tony Hawk's Pro Skater 2 Happy Face Blood
To unlock Happy Blood, enter the following button presses at the main menu or while paused during gameplay.

Press and hold R, then press START, A, DOWN, B, A, LEFT, LEFT, A, DOWN.

Now, each time your rider bails hard, a bunch of happy faces will emerge from the wound. Now it doesn't feel so bad...

Tony Hawk's Pro Skater 2 Set Time to Zero
To set the time to zero, enter the following button presses at the main menu or while paused during gameplay.

Press and hold R, then press LEFT, UP, START, UP, RIGHT.

Tony Hawk's Pro Skater 2 Turn Off the Blood!
To clean up the game and turn off the red, red krovvy, enter the following button presses at the main menu or while paused during gameplay.

Press and hold R, then press B, LEFT, UP, DOWN, LEFT, START, START.

Tony Hawk's Pro Skater 2 Unlock Disco Zoom
To unlock the crazy disco zoom feature (which makes your game look like an episode of Laugh-In), enter the following button presses at the main menu or while paused during gameplay.

Press and hold R, then press LEFT, A, START, A, RIGHT, START, RIGHT, UP, START.

Tony Hawk's Pro Skater 2 Unlock Unlimited Air
To unlock unlimited air at the game menu screen enter the following combination: While holding the R button press LEFT, A, START, A, RIGHT, UP, START.