Cheat:

 During the game you have the following cheat keys:

 [F10] - [W]     - Warp to any level
 [F10] - [I]     - Items
 [F10] - [S]     - Slowmotion
 [F10] - [G]     - God mode
 [F10] - [J]     - Jump cheat

Tip:
 You will find a secret level if you warp to level 8.