Action half-life. It was a realistic damage mod for half-life with some action movie sensibilities like stunts.
I got separated from the rest of my team and they all died. Massacred by the other team, 15 guys and not one of them went down, now all gunning for me. I figured I was toast but I fought on. 20 minutes later I had managed to bump them all off one or two at a time. At one point I was under attack by a large group of them, I ran away, and as I turned a corner I dropped a grenade at my feet, leaving it behind me as I ran. It killed two of them. I turned around right after the explosion and shot a third in the head who'd been wounded by the grenade and thrown against the wall of the tunnel.
When the match ended I could see the enemy chat and my dead team mate's. There was a lot of congratulation from my guys and one message from one of the enemy: "That was retarded."
I'm not normally that good. Normally in that game because you could bleed out, die from a single head shot or be crippled in your limbs I'd have had trouble killing two guys without assistance, that's why it made sense to travel in small squads. But that game, on that day I ran that match like a commando. Laying traps, blowing up barrels, hitting and disappearing, swapping out my empty guns for the enemy's and somehow always having the right one at the right time. I even jump kicked one of their snipers in the chest, sending him flying off a rooftop. I'll never forget it. I ended the match with 36 health. Most of the damage incurred by a man with stealth pads on his feet using throwing knives, he kept making attacks on me and disappearing, but when he stepped on the body of one of his friends he left bloody footprints behind, I followed the prints and caught him bandaging behind a crate where I shot him with a sawed off shotgun I got off the same corpse.
The next round I was the third person to die. So much for my invincibility. Maybe they were targeting me after that.