It was a very big challenge for me to do this but I made it. I took about 2 month where I worked every day on this costume. I used much of different materials... the most armor parts are made of Worblas Finest Art, the helmet is made of Kobracast and papier-mâché.
I made the 2nd place at Blizzard costume contest at gamescom.
You can see the whole costume progress here: