Cool use of the theme! I found the sling shotting and returning very cool and the controls to do so were straightforward. One QOL suggestion is to maybe make the directional arrow when your sling shotting yourself change size in addition to color. It would make it a bit easier to judge how far you are going. Also I found the beginning tutorial area a little long, I'd prefer to get into the boss fights as fast as possible. Overall fun gameplay and challenging bosses!