No missing pieces, nothing was damaged in shipment.  Took about three hours to put together but my husband did it by himself so with recommended two people it may get done in the 1.5 hour estimate.  Did have to further drill out some of the holes as they didn't line up and some of the plastic tabs used to snap the cross bars in place were broken but we improvised until our replacement parts arrive from the manufacturer.  I personally recommend a heavier futon mattress and lighter top mattress because it helps stabilize the bunk bed, otherwise it is a bit wobbly especially when climbing the ladder or moving around in top bunk.
Overall I'm happy with this piece and prefer it over other kinds of bunks available.