Type in the game
Hidden and Dangerous Deluxe Edition: Cheat Codes (English) Free Download
iwantcheat
and you hear a click which indicates that the cheat mode is active. Now you might type in:
funnyhead – Big heads
skipmission – Mission skip
abandon – Lose mission
ironman – Health
fullhands – Single player mode inventory is complete
immortality – Invulnerability
Suicide – Suicide