I think getting the exit switch in I lost Miss Ali's hoop was a bit awkward. But I did like the really subtle assymetry with the exit door and the ninja not being in the middle or anything, I really love that when it's symmetrical and then a few things on each side are a bit different ;D
I think you should move Here come the Zappers. (smaller and smaller) to 12-2 and have the Fish level be 12-3, I think it'd balance out the difficulty curve a bit.
I loved Here come the Zappers, I couldn't find anything I disliked with it.
I think with Illusions Confusions, the map was great, every object didn't feel out of place, had the right amount of zap drones and everything, but, I blew ass at it, but that's just because I suck. ;P
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I feel that Latter Plane Zone! is one of those maps where after each try, you get a bit farther and bit farther to completion. Like, it's one of /those/ maps, I didn't hate it or love, it was okay.
Gah, 13-1 is good too. Really liked it. It seemed kinda parkour-esque.
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To me, Honeycomb Bubbles felt atmospheric to some extent, which I liked.
Woah, Roll High Little One has sweet tiles! And a sweet name! ;D (Also, in the bottom of the level, you can cheat death. ;/ )
Love Withered, loved how you moved around in it.
Overall, levels kicked (my) ass! :D