This is pretty cool. I like the art style, next time you should try messing with Godot's themes for your UI! You can get some pretty nice looking buttons and stuff that'll fit your game a lot better than the default grey ones for relatively little effort. I think the game resolution is probably way too big for a web game, though. Even when full screened things were getting cut off for me. You could probably get away with halving the game's window size and just panning/zooming the camera where necessary.
Overall, good job! Definitely impressive for your first game in Godot!