Here's some I use
sv_cheats 1 // Enable cheats
god // No damage from zombies
noclip // Free-fly, pass through walls
player_sustainammo 1 // Infinite ammo without reloading
give <weapon_name> // Spawn weapon, some are map specific though. Append _upgraded_zm to the weapon name for the packapunched version
r_fog 0 // Disable map fog
I dont think you can turn 'death barriers' off via console. But..,
Press Win + R and paste:
%AppData%/Local/Plutonium/storage/t6/scripts/zm/
Within that folder create a new file called
_clientids.gsc
Open it with a text editor like notepad/notepad++ and paste in
init()
{
level.player_out_of_playable_area_monitor = false;
}
When you load any of the zombies maps in T6, you will no longer be immediately killed when you have noclip on and go well outside normal map areas