Yes! I do everything in this game haha(in fact i'm still learning how to do good sound effects, but i'll get there eventually)! And nice! Godot is a good engine, i know a lot of devs that use it.
Viewing post in REDO! Dark Sci-fi metroidvania(DEMO)
As for sound effects, you could view my game AI: Wild & Free, available here on Itch. For music, I have a soundcloud and bandcamp. I'm actually currently working on a portfolio video atm, made up of content I've created over the past couple years. I can give you a link to that when it's finished, if you like. :)