Headhunter: Redemption (PlayStation 2)

Headhunter: Redemption
Developer: Amuze Publisher: Sega Platform: PlayStation 2 Released in US: September 21, 2004 Released in EU: August 27, 2004 This game has debugging material. This game has a hidden level select.

Debug Menu

Applying the below code will enable an elaborate debug menu. This unlocks a level select menu in the main menu, and will enable the debug menu when holding the Select button while in-game. The options here are fairly self-explanatory. This will also put a build date in the top right corner of the screen.

USA codes:

Master Code (only needed for cheat devices)
90423B20 0C108E70

Enable Debug Mode
0043B8C8 00000001

The second part of the debug menu can be activated by holding Select and pressing D-Pad Down. One of the interesting options here is the ability to use save states. It isn't clear if taking screenshots work.

The third part of the debug menu can be activated by holding Select and pressing Circle. This allows you to obtain any weapon.

(Source: Original TCRF research)

Level Select

The debug mode code will also enable a level select menu in the main menu.