Doom RPG cheat codes

CHEAT MENU
Go to menu in-game and press "3666". From here you may Select:
 * This will send you to the Cheat Menu.
 * Cheats:
 * Noclip (???)
 * Disable AI (???)
 * Give All (Gives all weapons, items, key cards and money. More money will be added every time Select is pressed)
 * Give Ammo (10 of each type every time Select is pressed)
 * God Mode (Invincibility)
 * Level Up (Up 1 level every time Select is pressed)
 * Give Map (NOTE: Getting auto-map in this way does not show the secret doors for each level)
 * Change Map (Warp Levels):
 * Intro
 * Junction
 * Sector 1
 * Sector 2
 * Sector 3
 * Sector 4
 * Sector 5
 * Sector 6
 * Sector 7
 * Des. Junction
 * Reactor
 * Credits
 * Items
 * See "Stats" (???):
 * Pos
 * kTotal
 * kUsed
 * kInFree
 * kCurFree
 * kMap
 * kSound
 * kPNG
 * See "Developer" (???):
 * Vars
 * Benchmark
 * Store0
 * Store1
 * Store2
 * Store3
 * Force Error
 * Print Monsters
 * Print Memory

From any menu, type 3366 to get a 'fps rating'. It's actually a render time counter, similar to an fps counter on PC.