I'm glad you liked it. Yes I really do appreciate criticism, because even though being praised without criticism makes you feel good about your work, it doesn't really let you know about your flaws and fix them.
My initial plan was to make walls close in gradually until you reach end of the room but I couldn't find a way to do it for curved walls before deadline. But fixed obstacles are a good idea too, I'm gonna try to add a different mechanic to each room to add some difficulty curve too.
Thank you so much for playing my game and leaving feedback :->
Btw your game was amazing, I hope you're planning to work on it after the jam. I'd love to play more of it.