Teaching you the correct way to play HL2.

To get a copy of the old engine version of Half Life 2, go to this page: https://sourceruns.org/source/downloads/
You are looking for the one that says HL2 Old Engine Unpack. It runs as a source mod.

Music at the start of the vid is Hard Fought, my favourite HL2 music track:    • Half-Life 2 [Music] - Hard Fought