Action Doom 2: Urban Brawl
We don't get many Doom total conversions round these parts, so I was pleased when TIGSource linked to Action Doom 2. Set before Mars, presumably in the Doomguy's drunk Vietnam-vet period, it's a street-based beat 'em up with a Max Payne monologue to kick things off. Whiskey, redemption, and fists are the main themes. I think it's safe to say you'll enjoy it. Get the trial version here.