A few comments:
- Overall the concept was fun but the game lacked a bit of direction on where to go and when.
- The theming was a bit inconsistent with art pixel sizes, font, and map design
- Make sure to polish up the levels by making world borders not visible and utilize layers for objects which should appear in front of the player
I really liked the idea of the game and it is definitely a good prototype and I hope you work on it more!