That last level was tedious!
It's a nice game. The mechanics are solid, and level-design pleasant while challenging. The pixel-art is also lovely. I liked it!
Well, yeah, a solo dev under tight time constraints, trying to make a challenging final level, and not having time to playtest with anyone else does tend to lean towards overly tricky :P
Glad it wasn't too much to make you dislike the rest of it though!