Splatterhouse (Arcade) - Playthrough/Longplay
13Splatterhouse (1988) Arcade, Namco
Story:
While Rick and Jennifer are alone in the woods, a violent storm suddenly broke out. The couple seek shelter in an inconspicuous mansion. Jennifer's shrieks are heard as Rick blacks out. A strange mask comes to Rick's fallen form and goes on Rick's face, apparently giving him the strength to continue. He awakens in a dungeon of the house's lower level with a strange mask. Rick goes on a rampage through the dungeon and the mansion grounds, killing hordes of monsters. Inside the mansion, Rick finds Jennifer, prone on a couch and surrounded by a throng of creatures that retreat upon his arrival. After their departure, Jennifer is pleased to see Rick but suddenly transforms into a giant, fanged monster that attempts to kill Rick while occasionally regressing to her human form, whimpering and begging him for help. Rick defeats Jennifer, who transforms back into her normal self and thanks him before her body disintegrates...
https://splatterhouse.fandom.com/wiki/Splatterhouse_(1988)#story