Split Second

Starts off as a gritty cyberpunk buddy cop comedy — Rutger Hauer plays the most tortured detective in existence, living entirely off of chocolate, coffee and cigarettes — before morphing into a balls-to-the-wall action horror where our two leads deteriorate physically and psychologically while going toe-to-toe with some mutant alien devil freak who's been grotesquely slaughtering civilians and leaving blood sigils all throughout flooded dystopian Future London. It's basically Se7en but John Doe is a Xenomorph. Pure undiluted '90s B-movie cheese.