Overall I liked how u used solid colors that match with the game art.
I noticed that the play button's clickable area is not to the whole button, but more to the right corners. Not sure why.
Choice of art style is good and the music matched with the art for me. Maybe a wild-west style would be much suitable with your desert colors and the cowboy hats.
The tutorials were helpful and executed well during the play time. I think those pointy spikes could have some red tint to quickly signal that they can hurt the player.
I also faced same issues as mentioned in below comments. Hope that they will be fixed after review. Love to see the improvements and polishing over time.
All the best!