After playing through the game, Here are my opinion:
Things that need to be fixed:
- If you spend too much time on a level, the music just stops and never start up again.
- There is no button to exit a level or return from the level select screen to the main screen.
- The tree sprites sometimes get cut at the top.

Things that I think will improve the game:
- Stick to 1 font. I realize there are 2 fonts in the game, one for the UI and one for the instructions in the level.
- Have a indicator of when a character is selected on the character itself. the indicator on bottom left is too small and unintuitive.
- the sound effects and UI feels out of place from the sprites and the music.

Thank you for the feedback.
Can you please specify where do you think the game needs more explanation so I can improve the tutorial.

Thank you for the feedback.
I will see what I can do.