Nice work, the attacks patterns were interesting, and the swap of weapon is good and makes the fights more dynamic. There are a few things with graphics that could be improved, for instance the import options of the sprites in unity should not use any compression, so that you get the crispy pixel art look (altho I'm not sure that's what you were going for?), and also you should consider having the same pixel ratio for all your sprite to make it look better, especially the cloud of green poison (I guess?) from the flower.