I think the game has potential, but there's certainly room for improvement. First I'd remove the flags and replace them with portals or something, for every gamer a flag like this means checkpoint, but in your game it's not a checkpoint. Jump animation could be a bit smoother, feels right now like it's jumping and falling at the same speed instead of accelerating.
Also I think it's not possible to self-destruct to kill the bat? I self-destructed while the bat is close but he seemed unaffected, only when I touched him he died (but so did I).
Overall better instructions would help the game, according to another commenter it's possible to shoot in the game, I didn't know that :(
I like the overall visuals and the gentle lighting effect as the character moves around.
Any reason why there's no Web build since you're using Godot?