After finishing Robo Rampage, I gave myself a couple weeks to challenge my independent dev skills. I wanted to learn how to add a health pickup, basic SFX, background music, a double jump, and have a door open after a certain set of enemies were killed, unleashing faster and stronger enemies (this one took me awhile). I was able to do it! Pretty cool.
I figured out to get an itch account up and running: Feel free to try this nonsensical game out 
Not bad at all! I did find the music rather distracting, but I can understand why you used it. The roll-down gate at the end was neat, and a clever way to create a finale. Keep it going =)
Coming from someone that has just finished the same Godot course, albeit I went a completely different route to you. I found myself giggling to myself with that music and sound effects. Nice work.
Hahaha I’m happy you laughed at the ridiculous music and sound effects too. It clearly doesn’t make for great game music, but it definitely entertained myself