Cheats

You can enter these in the console or assign them to keys in your cfg

Command	Effect
god	Invulnerability
notarget	Monsters won't notice you until you shoot. Quasi a permanent Ring of Shadows.
impulse 9	All weapons, full ammo, gold and silver key.
impulse 11	You receive a rune, repeat it to receive the next one and so on.
impulse 255	Quad Damage
fly	Flymode
noclip	You can move through geometry and everything. Movement depends on the engine.
map eXmY	Load map Y from episode Y, you lose all items.
changelevel eXmY	Load map Y from episode Y, you keep all items.

TODO: explain give