Carrion is a Metroidvania that makes you the villain. Specifically, a bloodied shrieking mass of gnashing teeth and swirling eyeballs, a hive of snapping tentacles that writhes and thrashes like a pile of cartilage and intestines come to life as it slithers its way around an underground facility.
Source: N4G PC Carrion Review – A Bloody Body Horror Masterpiece – Seven Out Of Ten