Real nice, the design follows a theme and does it very good.
The level design (second one) is great too, almost always new where to go and when I failed and looked back, saw a big arrow pointing towards somewhere else, however, it'd be nice if it had checkpoints, the added difficulty of the level rotating paired with precise movements is great, but feels too punishing to have to go over the whole game again, where it said Fail! I just jumped, thinking the way to get out of there was by literally failing, but nope, it got me all the way back and I felt my sanity dwindle.
Its a great idea and the combination of 3D and 2D is not seen that often, wish I could've gone further and completed it :(