Wow I cannot get anywhere close to 100 levels, lol, but it was fun trying a few times.A healthbar would be a big improvement, and some more obvious of enemy feedback when they get hit.
Nice sprites, good work!
Hopefully you got close to the end, there's only actually 13 levels. I ran out of way to much time to make anything else.
That's a good idea, and if I had time it would have been great to add a knockback to enemies when they get hit.