Sweet game, It kind of reminds me of playing trials of mana. I really like the level design and how you used the different colors for the different zones. I like how you approached the storytelling too.
I did notice the red slimes were a little hard to hit, and some of the bushes are on the wrong layer order. Also have you used Sprite Atlas before? it may help with some of the visual tearing.
Nice work for a solo project done in a week. Would love to play a future build of this game!