This was an enjoyable little maze game with the added mechanics each level relating to your ability to change shapes as you navigate. I'm impressed you did everything from scratch as a solo dev in a week. That automatically increases the rating by me. The inspiration is also a good one and matches the theme.
The only thing that felt weird /off to me was that the triangle is the only one that could break walls (i guess because it has points?) but it felt weird that the other shapes did not have their own innate ability beyond passing specific gates etc.