Very nice game !! I quite enjoyed it ! The different mechanics were really nice and you nailed the difficulty curve ! The challenge mode is a very nice addition and sure is challenging !
If I can change anything, I would have loved the art to feel more coherent between every asset. It was still very cute but I would have enjoyed it even more if there were a specific style all throughout the game. And also if the character could feel more lively. Both the ladder and the character are very stiff, it would add so much charm and personality if you could improve on that. The sound design and music are on point.
At the end I would also love to the see the full tower : maybe with a zoom out or just a scroll through to enjoy how catastrophic it was. Could pair nicely with the text at the end.