Old Fun Monkey Horror

Ilovemonkeys40s game.. (KMH is my game.)

I got this weird og fmh project from a really sketchy site.. It said it had no viruses so i loaded it. When I tested it weird music started playing then the heart started going faster and faster and then it stopped. Every monster gone. It slowly started turning red then the music became super loud and i heard screams and a huge monster came out of nowhere. Please help...