I found the loading “Gdevelop” screen charming but feel you should have scanged up the art on the next intro screens. The text story was cool but a bit heavy and fast when i tried to read it.
I like the character and bg art on the level, if you continue the project I would make the bomb work differently as is like an exploding bullet.
The bird enemies are the toughest maybe needs a little balancing as soldiers can be a lot simpler. The death animation section also runs a little funny.
All in all I am only giving extra feedback because i liked you concept :)