I really love this art, it is so simple but really effective! I think for me the intro before the first gameplay section is a bit long, but I didn't really mind because the dialogue was really fun, the music was absolutely excellent and fit the game perfectly, and all the UI and menus felt like they had an incredible amount of polish :) I loved the platforming sections, I am a big fan of difficult platforming and the art style just, worked for me, it fit perfectly!
All the best in future and good luck for the results :D