Its much more frustrating at times than I expected. the lower hull and most mechanical parts were a breeze- its the turret and a little of the upper hull that is the problem. I never feel like I am 100% sure I am doing something right, and always worried that about every little part having a small line, uneven edge, or whatever other defect. Many parts that are supposedly the same can be totally different fits, or the instructions may not make sense at all. For example- the commanders turret. The piece that it inserts into has a little notch making sure it will only face one way (backwards) and the manual even shows it installed backwards. In the very next panel however, it is shown facing foward with no explanation at all- along with every other picture. That is an easy fix, but I hope you get the point.