My friend is trying to think of the name of an Atari 800 game he played around 1982. It was a sort of side scrolling platformer that he picked up in a bargain bin. After looking through a list of games he said it wasn't Pitfall or Spelunker, but those games definitely remind him of it. I realize this isn't much to go off of, but I will post an update if he thinks of anything else.