List of Bad Guys:
Find the two computers near the first save location at the beginning of the game. Use the "Talk" command at this location to see a list of enemies and graphics from the game.

Hidden artwork:
Place the game disc in a PC compatible CD-ROM drive to find more images from the game, including a comic strip.

Replenish Health:
When your character has less than eleven hit points; stand on the stairs and allow an opponent to hit your character to regain hit points.

GameShark Codes

Level 3 Access
FED1D6D900000006
 
Infinite EP
D068838000000190
18AC16CE00000190
 
Level 3 Skill
2E9B231A00000006
 
Infinite Gabaro (Cash)
AE4351CE0000FFFF
 
Max Attack
FEE9D6D900000006
 
Max Defense
2EA3231A00000006
 

Thanks to Revolution reader kelly!