It's an interesting take on a "bullet hell", haha!
I really liked the game and played it all the way through. The surreal atmosphere was incredibly well done, and I liked exploring the levels. I love the way the objects in the world were themed around the sins.
It felt like some of the levels also played into the idea of the sins in their solution. In the Pride level, I ended up going around all of the obstacles (no clue if that was intended to be possible), instead of going through, which I thought might be symbolizing overcoming pride by not blinding rushing into things thinking you know the best way forward immediately. And for envy, you need to reflect inwards and focus on what you already have instead of caring so much about others.
I don't know if that was intentional in the level design or if I'm just massively reading into things, but huge props if so! Either way, I thought the levels were quite nice, and just the right level of difficulty for me.