Use a text editor such as notepad to edit the "Init.cfg" file in the "\Cryostasis\Data\Scripts" directory. Change the line:

d.consoleh = 0

into:

d.consoleh = 1

Press ~ at the main menu, then enter one of the following codes to activate the corresponding cheat function.

Effect	Code
All weapons	giveall
Set player health	pl.health = [number]
Toggle flight mode	d.fly = [0 or 1]
Toggle god mode	godmode = [0 or 1]
Toggle no clipping mode	d.noclip = [0 or 1]
Toggle unlimited ammo	unlimited_ammo = [0 or 1]