The controls were quite buggy until I realized the dragging hitbox is from the bottom, but that's not a problem once you get used to it. I liked the mechanics, especially that the two slots don't go in order like you'd expect, but the first one triggers twice for every second trigger. Also I teleported to the middle of the path in the "I don't like water levels" round for some reason that was funny. I think it was because I hit that secret flag on the top or something I don't know.
If you'd like to explore these mechanics more (if you're not already sick of gamedev for those four days), some ideas to add even more puzzle could be having some sort of downside to switching the arrow blocks, maybe if they're not active, they take up a specific space in the level as a wall, or you only have a limited amount of clear the slot button presses.
Also I used the same font lol If you want the font to be easier to read (since you're on Godot), you can go to its texture filter and set specifically the fonts to "Linear" instead of "Nearest", that might help (if you recall you probably set the global texture filter to "Nearest" to make the pixels not blurry but that makes the text harder to read)