Cheats:

 Press [F10] and the following keys:

 [W]       - Warp
 [Z]       - Monster freeze
 [I]       - Extra items
 [G]       - God mode
 [E]       - Skip level
 [O]       - Complete view
 [M]       - Memory info
 [P]       - ????
 [1] - [9] - scrolls