Oneirophobia

Waking up in the middle of the night, you feel a dark presence among yourself.  Taking your gun you go into the hallways only to be approached by your worst nightmares

WASD - to move

Mouse - to turn and shoot

Collect gun parts that fall from monsters and go to your upgrade bench to  prepare yourself, but be warned, though your room is safe, it is punishing to be there. Every time you go in the waves will advance by three, making survival harder.