Demo Cheats
At the main menu screen of the demo enter the "Game Options" and Enable the Console. From there, push your tilde (~) button to bring down the console and type the following:seta thereisacow "1337"followed byspdevmap eldabaThis will start the demo level with devmap and cheats enabled. This allows you to use any of the commands in game without restriction. When in game, bring down the console and enter any of the commands from below to activate the 'cheat'.
Infinite health - god
Walk / Fly through walls - noclip
Enemies ignore you - notarget
Refill your ammunition / grenades - give ammo
Moon jump (jump_height 39 for default) - jump_height 128
Slow motion (timescale 1 for default) - timescale .25
Each time it's entered you'll be given 2 different weapons from the demo - give all
