Ah, one of my most revisited arcade cabinets as a kid. Spooky stuff didn't bother me so much when you had a gun you could fire at them endlessly. The monster designs looked awesome for the time, and the boss fights felt intense. I don't think I beat it until Family Fun Center/Boomers started doing 10 Buck Tuesday where you could play games endlessly with no quarter requirement if you paid $10 up-front. We eventually got it on PC too, and I got a lot better at beating it with minimal damage

from what I played it's a solidight gun game with cool graphics

My all time favorite light gun game. HOTD 2 comes close, but I have a bit more of a soft spot for HOTD 1. It's a shame the source code is lost so it can never be ported to newer systems, but emulating it is still really fun.