Wow, Ako! I'm honestly blown away by this, it's absolutely amazing! Seeing the shooter enemy, the i-frames, and especially the final boss dashing and attacking is incredible. To be honest, I'm shocked by how much you did in such a short time (I wish I could code that fast myself!)
I absolutely love the ideas of the i-frames, turning off player-enemy collision damage, the ranged enemies, and the boss rework. I am 100% considering implementing these mechanics into the official game. Also, naming it the "Champion Edition" is both hilarious and brilliant, I love it!
Since I'm developing the game and want to see how you structured these features, could you share the modified scripts/source code files instead of a compiled build/executable? You can upload them on a GitHub repository if you use one. I'd love to take a look at the code! Thanks again for your incredible support, this means the world to me.
P.S. I noticed your mouse cursor is a mini Hatsune Miku. As we say here in Argentina: "Banco una banda" (which basically means "I support this heavily" or "I absolutely love it")!