Here are some cheats for Cryostasis.
Browse to Program Files (x86)\1C Software\Cryostasis: The Sleep of Reason\Data\Scripts. Open init.cfg file and locate (ctrl + f) the following line:
d.consoleh = 0
Set the value to 1, so it should look like this.
d.consoleh = 1
Save the file. Now you have access to the console and all the commands. Here are some "cheat" commands.
Code:
godmode = 1
pl.health =
unlimited_ammo = 1
d.noclip = 1
d.fly = 1
Godmode makes you invulnerable and set a large number for your health for a longer lifespan. Fly and unlimited ammo are self explanatory, I'm not sure what noclip does.