Enter the game and when playing type "iamacheater" to enter the cheat mode. Enter one of the following cheats to get the corresponding effect:

[Shift][Ctrl][+]   Increase brightness
[Shift][Ctrl][-]   Decrease brightness
[Shift][Ctrl][M]   Get monsters
[Shift][Ctrl][N]   Get units
[Shift][Ctrl][W]   Next stage
[Ctrl][L]          Instant level up
[Ctrl][J]          Kill selected units (only works for player units)
[Ctrl][N]          New adventure
[Ctrl][Alt]        Next stage
[Ctrl][V]          Skip to last stage