The +15% DEF set bonus from Iron Talisman either does not work or is not shown on the character screen. Put 4x Iron Talisman (Fierce) and 2x Health Talisman (Overwhelming) on my FotD Eddie and I only see the 6 x 114 (+684) DEF on Stats tab, which means I am 278 def lower than the expected amount.

Someone might've posted this already but I have no time to read through the whole forum as I'm at work