Rather infamous Doom clone that came packaged with Chex cereals back in the 90s.
https://mega.nz/#!lNoFDCgb!QkMneHBG2r5h9T7l28N0QIQyNh3OCMfPbuoC0Q10vRA

Thanks.

I was literally just talking about this game a week ago after having probably never mentioned it once in the previous 20 years.

What the fuck