Level select:
Press 1 or [End] to pause game play. Press A through K to select a level.

Cheat mode:
Press one of the following keys to activate the corresponding cheat function.

Effect	Key
Restore energy	0
Add Cool %	[F6]
Free movement	M
Level skip	[Plus]
Replay, change difficulty level	5
Minimum energy	[F4]
10 seconds remaining	[F10]