This is very cool! You nailed the mix of 2D and 3D I also loved you character design.
Maybe something you could look into is the performance of your web build, it takes quite a long time to load the game. The quickest fix could be to add a desktop build as I would expect that you would not have this problem there.
Otherwise, look at some of your shaders and check whether desactivating/tweaking some of them helps.
Overall, I love the vibe, SFX, music, silliness in the art, great job!