Hold [Caps Lock] + D + X + [Arrow Down] to enable cheat mode. Press [Backspace], then type one of the following codes to activate the corresponding cheat function.

Effects - Code

Power-up weapons, both characters - fire
Full health - rain
Power-up stamina, both characters - magma
Round mana gems up to 250 - astral
Enable fire, rain, magma, astral codes - prime
Level select - ether
Invincible, except for spikes, weights, drowning - wind