For:

Invincibility: IDDQD
Lights: IDBEHOLDL
Temp Invincibility: IDBEHOLDV
Partial Invisibility: IDBEHOLDI
Area Map: IDBEHOLDA
Radiation Suit: IDBEHOLDR
Super Strength: IDBEHOLDS
Level Jump: IDCLEV + 1-32
Music Choose: IDMUS + 1-32
Make Full Map: IDDT
Make Full Map plus Items: IDDT (twice)
Ammo; Armor; Health; Keys: IDKFA
Ammo; Armor; Health: IDFA
Walk through walls: IDCLIP

To kill all monsters in the level type: FHHALL
To make yourself invisible to monsters utill you make the first shot type: FHSHH