The game was too slow, realy bad choise of speed for a maze game.
Add to this and the vission losses and the game became a frustation.
Also the scrolling was too jaggy, but too many unity games here are like that so I do not count this one.
On the pros was the explanation in code.
Enjoyment is the number one factor in a game, but this do not means that games must be easy. Means that there must be an illusion to the player that he became better, in action games you usually learn the enemy position and patterns, but you feel that you became better cause you hit them in the end. In a maze game you learn the passages but there is no interaction so the player ends up that he just learned the map and this is ussualy not enjoyable enough to keep the player's interest.