This is typical Chinese flat-packed furniture. Several things stand out:
1. It's going to take you 45 mins to assemble one even if you are an ace. Literally nothing is assembled. The hardware is a little better than some. The parts were correctly labeled and all fittings were present.  A battery screw driver or drill with a Phillips head will speed things up a bit. You will need a hammer too.
2. This is 100% particle board and cardboard. The veneer is extremely thin, like paper. Any damage will be essentially irreparable.
3. The furniture is VERY HEAVY. Weaker persons may have difficulty carrying these up stairs. The weight of the particle board concerns me WRT the strength of the fasteners - they may not be robust enough for the weight of the pieces they connect.