http://xn--hckqz0e9cygq471ahu9b.xn--...83%BC%E3%83%AB
Tyr is crazy strong against bosses in my experience, her AttackUp++ along with StunAttackUp++++ make her kind of like a mini Siegfried, but actually useful in average situations. I routinely did like 50-60,000 damage against the Expert Event boss with her in a single turn, just from doing 3x normal attacks or her Burst against a stunned boss at only like level 40 and no special Lightning equipment to speak of in my weapon grid.
Coupled with Dark Amon it's a monstrous boss killing combo, it's actually the exact two SSRs I already have on my second account. I put them with Mortred and have pretty much no issues with anything ever.