Yep first jam here too and was super fun.
Also i try to give objective opinion don't take it too hard. We all worked under pressure :)
As for the lvls, yeah puzzle game usually bore me quickly as they tend to be too obvious, but I had some interesting struggle with yours so good job :)
That is also why i don;t do puzzle games... too hard to think about lvl design easy enough to be understandable and hard enough to be challenging.
I stick to procedural generation, much more fun :) (i mean im sure here are ai powerfull enough to do puzzle procedural generation.... no ?)