I was happy that all the pieces were in the bags and they all fit together.  A few of the assembly instruction were vague, but can be figured out.I am an avid do it yourselfer and it took 4 or 5 solid hours to put together - a ton of bolts.  If you are not familiar with the use of a socket wrench, recruit some help.  I also had to call my wife in to help once assembling the "A" frame.  I'm 6'1" and it was hard to manuever.Additional tools needed that were not listed in the instruction booklet:8ft Ladder, socket extensions, rubber mallet (hammer will damage the metal) and some WD-40.  Also, various size socket wrenchs and screw drivers were called into play.Other than the cons listed above, not a bad product. I am adding a rope extension to the swings and two handles at the top of the ladder so my 2 year old can climb up himself.