Here are some cheats and tips for the game Deathtrap Dungeon.
Level select:
Note: Remove all memory cards from the PlayStation before enabling this code.
Press L1, R1, Triangle(2), Square, Circle, R1, L1 at the main menu. All levels
may now be selected on the “Load Game” screen.
Invincibility:
Press Up, Down(2), Up, Left(2), Right, Up at the setup screen.