Overall good feeling game. Music choices work really well with the aesthetic you've created and the mood of the game. The platforming felt good, though there were some times I could manage to get my character stuck (swimming up in corner or platform blocks diagonal from each other.) I really liked the look of your pixels. There were definitely times were I would have liked to been able to see more on the screen when planning jumps though, so maybe not the best scale to fit within the 64x64 limitation. Some others already mentioned, but it would have been nice to finish collecting. It was a bit jarring having the game suddenly end when I hit 100. Great job overall. I felt compelled to collect and enjoyed moving through the world to do so.