Really bad commercialized Halflife 2 mod: "Hunt Down the Freeman". It costs $30 $17, but from what I read, it seems there are better Halflife 2 mods out there. Why does VALVe and Steam allow their IP to be raped and humiliated like this? Oh yeah, because money lol. You can buy it here. I will personally buy it when the price goes below $4, which I feel will happen in the next Christmas sale.
Also playthrough video which I have not bothered watching: