At the core of the seven-portal hub there are three stairs that must be raised. After you raise the first flight of stairs, walk halfway up them. You will see the other two platforms that the other two staircases lead to. If you try hard enough, you can actually jump to the smaller ledge, skipping a part of the hub!

While playing, pause the game and press C-Up, C-Down, C-Left, C-Right. A CHEAT option will appear on screen. Enter this menu, then quickly enter one of the codes below.

• God Mode -- C-Left, C-Right, C-Down
• Full Health -- C-Left, C-Up, C-Down, C-Down
• Level Select -- C-Left, C-Left, C-Right, C-Right, C-Down, C-Up
• Butcher -- C-Down, C-Up, C-Left, C-Left
• No Clipping -- C-Up 20 times, C-Down
• Collect
  Select COLLECT then enter these codes on the menyu that appears.
  • All Artifacts -- C-Up, C-Right, C-Down, C-Up
  • All Keys -- C-Down, C-Up, C-Left, C-Right
  • All Puzzle Items -- C-Up, C-Left, C-Left, C-Left, C-Right, C-Down, C-Down
  • All Weapons -- C-Right, C-Up, C-Down, C-Down