Yes
There happen to be many cheats for Half-Life 2. You need to enable the console through the advanced section of the control menu in options. You press the ~ or ` key (Tilde) to bring up the console after which you need to use sv_cheats and set it to 1 "sv_cheats 1" which will make you unable to get achievements but you can now use cheats like:
God
Buddha - (basically god but health will still go down until you reach 1 hit point)
Noclip
impulse 101 - gives all weapons
And more that can be revealed by pressing on the up or down arrow while typing. I'd also suggest searching on Google or other search engines before asking a question like this as you wouldn't have to ask on here to find any.
There are no longer any cheats.
No there is no cheats.
there are no cheats
No. There are no cheats.
any cheats
There were No any cheats on Sorority life!
No, I don't think there are any cheats
No, their are no Tpmrpg cheats
No, there are no cheats.
No, their are no cheats for crossfire.
no there is not any downhill snowboard 3 cheats
halo 3 does not have any cheats