Made it to 50 fights without loss, and the first level of Trapper in the same fight. I haven't gone for Trapper before but I thought it would be good for a Mage. With level 2 Distortion, Intellect of 15 and Destruction 1, plus the 25% bonus for the first Trapper medal, my traps are doing 560-840 damage. Not bad for level 11.
I got my leadership up to 3800 by this stage, but I've got a bit of a problem with proceeding now. I've been around the first four islands but I haven't got the Verona map yet. Presumably the easiest guardian is the one on Scarlet Wind, but he's got about 50 Assassins and my Resurrection power is puny with only 7 Paladins and 28 Inquisitors. I find that against Assassins my units are often pinned to the back of the map so that the Assassins can't use their backstab ability. I tried to kite one of the maps on Bolo or Rusty Anchor but no such luck so far.