ULTRAKILL is a fast-paced ultraviolent old school first-person shooter developed by Arsi "Hakita" Patala and published by New Blood Interactive.
It's a very technical, style-based shooter like the Devil May Cry series and also hails homage to retro shooters like Doom and Quake in its artstyle. You play as V1, a robot who dives into hell to take the blood of his enemies as fuel to power himself; and faces powerful angels and demons alike.
I highly recommend this game, you can get it on It's website, and you can check out the developers, New Blood Interactive here.
MANKIND IS DEAD.
HELL IS FULL.
BLOOD IS FUEL.