This game was kind of like a test to me to see how I could do if i were to make a fighting game by using hitboxes and movement inputs, I'm happy with how it worked out, and I'm glad you liked it! As for the ability to fly, I decided to leave it there in case any bugs were to occur, however I made it so flying to the top is not beneficial, as enemies only spawn to the next floor if the current floor is completed.
Thank you for trying out my game!