Board Thread:Game Discussions/@comment-89.98.185.253-20140303160624/@comment-122.107.125.214-20140303223358

The trick is to recruit more friends, and buy the extra boss kills you need from the summon stone while it is still there. If you are 110 with lvl 70 legendaries, you should easily be able to get over 35 kills. None of my legendaries are over 45, and I got 38 kills last boss.

Then, just use the summoning stone to get the last 10-15 pieces you need, as they are massively discounted while the boss is still in action.

Once you have the pieces, you can hold onto them as long as you like, until you get the first armour to lvl 35, then craft the + version.