Note: If you are trying to play this in a browser, make sure you use a Chromium-based browser (such as Chrome or Edge) because Godot 4 exports only work on Chromium-based browsers on itch.io at the moment. Thank you for your understanding.
This is my submission for Godot Wild Jam 54 ("Curses"). I used Godot 4 RC1.
Controls:
Spacebar - jump
A - fire a gun/cannon
S - fire a cannon
D - fire a cannon
F - advance to the boss level in the explanation screen