You accomplished a nice core experience here. Impression regarding the gameplay: I felt the progression in the first minute too slow. Also, the horde felt very strong, as in I could not clear paths through it after 1:30 with the weapons at disposal.  
Good work overall! 

Clean pixel art. I like the outline effects and the subtle CRT shader effect. The mechanic where your attack type changes based on the last enemy killed is an interesting twist (if I understood correctly); it adds a layer of decision-making to target prority. Played a run and had a solid time.

Congrats on your first project! I like the look of the bunnyman and lightning.