Really good use of the theme(s) here, I think the coin mechanic was explored and implemented really well and it has a lot of room for expansion. I felt that some of the platforming mechanics could use some polishing, I often had trouble wall jumping up narrow pits, and sometimes felt that I should have a double jump when I didn't (I think adding some coyote time could help with the latter). The audio and visuals are both great, they work well with each other and don't feel too repetitive, which is important for a replayable game like this. Great job!