Took me about 15mins but i used an electric screwdriver on a low torque setting.
definitely needs to be screw-fixed to the wall,otherwise will collapse.
Ikr, I had to set 2 of them up. They look great side by side. It only took me around 2 hours to put both of them up.
This is a really beautiful shelf. I got a black one for our living room few months back and put it together when I was on maternity leave. All I remember is being bored out of my brains because the construction of this was so repetitive (8 screws per shelf i remember.. and the same again and again and again..) it took me about 2 hours to do.
Good price! Normally slitghly over £55 on Amazon: https://www.amazon.co.uk/gp/product/B016HXWQNW/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1