Eyeball level is bugged. Doing the same steps in different orders leads to the level ending or not, with no obvious way to work out the "correct" order.
Game's controls are just WAY too loose and sloppy for the precision required to pass the levels. Rather than feeling challenged, I just feel frustrated by the game getting in the way of my enjoyment.
Biggest flaw is that sometimes you have to guess - and when you do, the show incomplete button does not indicate where your guess is, so you have to find it manually.
The game suddenly stopped tracking the magician's posters sidequest, and now I have no way of finding the correct walls - does anyone know of a walkthrough or something listing where I can put up the posters?
You never have to guess in any of the game modes.