Dreamless: The Madness from the Sea

Dreamless: The Madness from the Sea is a metroidvania game based on the works of the American writer H.P. Lovecraft, the master of horror.
Play as Ambrose Blackwood, a British archeologist whose fate is irrevocably bound to the mysterious city of R’lyeh and to its monstrous inhabitants.
Cthulhu, the master of R’lyeh, waits to be awakened from his deep and dreamless slumber in order to spread the seed of madness upon Earth.
Fight cosmic creatures as you traverse the city of madness, acquire new weapons and super-human abilities: only you can save humanity from a terrible destiny.