Gave it a play - The Jam Version, and I think you've got a really solid character controller here. The movement feels nice and responsive, as well as quite weighty. You have a good balance on the variable jump too - well done!
I do also quite enjoy the layout of both your level and the hints to what is in each with the sprites - I did see a few triangles that I didn't know what do do with, as well as a locked door which made me want to find a key!
I did two runs, the first I went upward, and ended when I got stuck unable to climb the pile of gold.
The second I explored downward, unable to progress further than the locked door - I then got stuck on the right side of the gold pile, so I presume there's no way to progress further just yet?
Adding NPC interactions is cool, spoke to the first guy who wanted me to find a pocket watch - all the rest don't seem to have interactions.
Well done on getting what you did together!