Mortality Decomp. Killers is a free Post Void-like that scores you on how many doors you've "killed'

MDK was a 1997 shooter in which you played a pointy headed janitor named Kurt Hectic with a parachute suit and a gun for an arm, the best thing about it being its Giger-ish sniper mode interface. MDK is also Mortality Decomp. Killers - a sour lollipop puke hued Post Void-like with Hotline Miami's lethality and a very good spinny knifey move. It's completely free on Steam, although you can pick up the soundtrack for a few quid if you fancy supporting it. After each level, your score breakdown includes how many doors you've "killed".