I just tried this out, running it on the Minimig core on the C64 Turbo Chameleon cartridge (which Elevator Action AGA also works 100% on).
Great first version, even buggy as it is, had a bast playing it.
I noticed when I selected infinite lives on the WHDload options that it in fact did not work, I still only had 3 lives and then the game ended, but the invulnerability cheat worked. Also what are the cheat keys? I found F1 is a level skip, but couldn't find anything else.