CheatCodes.com has all the official Shadow Master PSX cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Wednesday May 22, 2013 for Shadow Master are shown below. We also have this game on PlayStation, PC, and sometimes tricks from other game systems will also work on PlayStation.
Start a game, kill the first two aliens and enter the room from which they came from. Then, enter one of the following codes: Level select Hold L1 + L2 + R1 + R2 + Triangle and then quit your current game. If you entered the code correctly, you will see a green light. Then, go to the opening screen where you can now choose a starting level from 1 to 16. Invincibility Hold L1 + L2 + R1 + R2 + X. If you entered the code correctly, you will see a blue light. All weapons with infinite ammunition Hold L1 + L2 + R1 + R2 + Circle. If you entered the code correctly, you will see a red light.
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