Thanks for all the feedback! And great to hear you beat the whole thing. I think you're right, a smoother difficulty curve may have been better. I think what happened was that it used to ramp up consistently to the end, but near the end of the jam we nerfed the last levels a good bit more than the middle ones. The last levels are still harder, but after beating the middle levels and improving your skill, I could see how you could have an easier time with them. About the enemies, interesting to hear they were frustrating to you. To me it was fun to dodge their bullets and shoot at them, but maybe that's just preference. To avoid the slimes you shoot getting shot, I usually wait a second and shoot one between the enemy's shots, or jump to change the angle, but I can see how fighting them could feel unfair, especially while in the process of learning all the other mechanics.
And about the controls issues, maybe would've been helpful to add some more settings, like reverse shooting controls and stuff. Maybe if we had more time.
Also, we ran out of time to fix that bug where the slime grows huge randomly. Sorry about that lol.
Thanks again for taking the time to write this. Always helpful as a developer to learn how people will react to everything.