Very cute game you have so far. UI and art have high GMI energy. I really like the loading animation between levels.
Doing smaller turns while sprinting is pretty awkward. I find myself entering the skid animation at times when I think I shouldn't. If I had to guess the player controller for aggy will force her to enter a skid and stop if it detects the back button input while running forward. Which is fine, but this also happens when I do a back diagonal input (i.e. back + right). In Mario 64, the player controller does something similar but it's very snappy and will send you back into the sprint state almost immediately. With aggy she goes from a skid -> a few seconds of walking -> running and it just feels so much less responsive.
Seems like a missed opportunity to not be able wall jump from a crouching jump to gain a little extra height.
Not sure if it counts as a bug but outfit changes aren't saved between level restarts. aggy will always start in her default outfit.