Definitely one of my favourites so far. Physics based platformers are always super fun and turning it into an escort mission makes them even better. Plus having a flying sidekick which can serve as a movable block (and you can even fly on it!) really brings gameplay to the next level. It truly opens a lot of possibilities and additional categories for speedruns in future playthoughs.
Not only that, but visualls (apart from menu) are very pleasing as well, and include nice details, like a different animation when bat gets hit with the slime.
5/5 in all categories from me. Good luck!