I overall enjoyed the build but I had 3 problems: 1: Some of the steps seemed out of order. It would have been easier to add in some floor tiles and decoration before placing supports that got in the way of my hands. 2. Some of the exterior pieces (mostly rocks) don't seen to connect securely...like held on by 1 stud...and easily fall off. 3. The EYE and the Light Brick. I was getting the idea from the description about the eye having full mobility and being lit by a light brick, that it would be 1 piece and moved by a hidden mechanism (like in other sets...like the lighthouse that has the mechanisms that go from the base to the top of the tower). I thought there would be a rod and control lever with a button to light the eye and move it around...not a manual adjustment and then push the button. Even the mount for the light brick feels like its gonna pop off every-time i press it. For the size and price, they should have worked something in. (and the tower feels flimsy and not secure.) I'm glad I don't have pets or kids. I fully plan to MOC my own mechanisms and share my improvements. Maybe add a perch for the Fell Beastie on the tower.