Modder Adds A Whole Lot Of Doom To Half-Life 2

What is the one thing Half-Life 2 has been missing all these years? Doom's weapons and enemies, of course.

The video below comes from YouTube user GhorsHammer who added Doom's weapons and enemies to Gordon Freeman's world using the always entertaining Garry's Mod. Freeman is used to fighting inter-dimensional aliens, but Hell creatures are probably completely different.

Check out the video below.