Tonight is the night for sacrifice! The sacrificial lamb? Your sister.
After a failed rescue attempt hell walks on earth on an eternal night, and now your only way for salvation is to be possessed by a demon, using his powers butcher demons with your bare hands, pipes, cleavers or a goddamn shotgun to save your sister! Splatter everything in 11 levels of pixelated violence, but be warned, it's going to be hard.
The game lacks polish but it can be played from start to finish. Future updates will be made for quality improvement, so every feedback is welcome!