Good idea, but some things:
1. Make the main menu a bit different, i like the font, but make it so everything is aligned in the center and the levels aren´t weirdly in the left corner.
2. Don´t loop the same music the whole time.
3. In the story, use the font you use for the rest of the stuff, cause this is just slow and unproffessional.
4. Don´t use this happy music for such a dark story.
5. Maybe use something more abstract or less happy than grassy world.
I hope the feedback helped you, would be nice if you could check out my submission too. :)