The console commands are pretty standard across all games with valve.
I'm assuming you just want the basics
god = Can't die
noclip = lets you fly through walls
notarget = disables enemys combat AI
impulse101 = HEV suit, weapons, and ammo
If you need a full list you can visit Gamewinners
[Edited by SnJester, 8/9/2010 11:27:18 PM]
Go to C:\Program Files (x86)\Steam\steamapps\common\Half-Life
copy the hl.exe icon and paste it on your desktop
right click the desktop icon then go to properties and type -dev -toconsole after hl.exe (hl.exe -dev -toconsole) then save.
When that is done just click on the desktop icon and open browse and go to C:\Program Files (x86)\Steam\steamapps\common\Half-Life and click the hl.exe icon and open to play.
While in game hit the ~ button and type sv_cheats 1 to activate the cheats. I usually bind q as impulse_101, /bind q "impulse 101". Make sure the Anti-Mass Spectrometer has been destroyed before you use impulse_101 or your game could crash. The link that SnJester posted will give you all the other commands.
[Edited by narrite, 4/6/2014 12:37:35 AM]
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