A good attempt at a platformer, utilising two distinct styles of levels each requiring a different playstyle. having the sword swing only at night is a interesting twist on the traditional genre. Instructions provided were effective; in-game tips were appreciated.
Because of the way the character moves, each level feels like an ice level, which can make movement feel a bit weird and even potentially frustrating. There were occasions where the character got stuck on terrain, especially corners. Finally, whilst listing references used is very good, it seems that not a lot of original art was made outside of the character. I might be mistaken there and if the number of artists you had was limited that may be acceptable.
All in all, a nice and effective twist on the platformer genre, and a solid try at the requirements. Well done.