Bugs: Couldn't find any bugs from what I played.
Strengths: Strong visual style with many hand drawn assets.
Weaknesses: It feels like your just floating around and it's very hard to tell where the invisible walls are going to be. Also I feel I don't know where I'm going or what I'm supposed to be doing in the game.
Changes: Make the invisible walls smaller or just remove them to allow players to smoothly move around instead of bumping into a wall every other second. Make the goal of the game more obvious.