It's like an evil hard version of Ballance (2004). I really like the aestetic you choose and the mechanics feel really satisfaying.
I also would love to now what did you use for level creation - I've heard about ProBuilder in Unity is there something like it for Godot as well?
One note I have (and I think someone has already mentioned it) - the part of the level on the second island is by far the hardest part of the level in general and it can be a bit to much for a new player.