This was a fun experience, nice use of the theme and mechanics!
I have noticed a visual bug regarding the tiles and some blue lines appearing as you move through the level. If you've noticed it and racked your brain for a lifetime and didn't find a solution, or if you've never even noticed it, I HAVE THE SOLUTION!!! This should work on all 2d games with this issue.
1. Go to menu: Asset > Create > Sprite Atlas;
2. Add all the sprites causing trouble to the atlas (usually the tile spritesheets);
3. Use the same settings for the atlas as for the sprites and a padding of 2 was good enough for me, but if you have the same issue, raise it;
4. The lines may still appear in the editor but if you build the game, the issue should be fixed.
If you have a question about this feel free to ask, I was stuck for at least 2 hours trying to find a fix in my game.
Good game, hope you had fun making it!!! ^^