First kill.
My technical "first kill" was the snake in the sample, solo adventure from the Basic Red Book. A few minutes later, my best friend Bargle and I left the dungeon...
First kill in a real adventure would be the Carrion Crawler hiding in the broken wall, also from the basic book. That was, sheesh, 25 years ago? In that adventure I also remember something about a cursed bed that put anyone to sleep that lie in it. To wake them you have to get a pea form the kitchen and put it under them... And in one of the closets was a hatbox. If searched, you find a silver hatpin worth a small chunk of change... Ah, memories...
Later!
Gruns