Wow, Sands of Destruction has one of the tankiest bosses I've ever fought. (it is a slow arse though)
Lots of HP (didn't keep track, heh), but uh. After its defense+regen buff, which it used after 50% HP for me...
Taupy does 0 damage per hit, so his entire string is 0 damage. Overdrive did 79.
Morte does 0 damage per hit, so her entire string is 0 damage. Special did 54.
Gunner did 32 per hit, 17 hits, so her entire string was around ~520 damage, plus a Special worth 180 and s/he can pull off three to four strings per turn.
The problem is that this tanky jerk healed 450 per round. Including Taupy and Morte's rounds.
That took quite a while to finish!
Game's still pretty easy though. Too many healing items are thrown at you, and healing spells are still very, very potent even at 1 MP.
Gunner is easily my favourite character. Strongest heal I've seen, it's MT, clears all status and debuffs, has a song to grant status/debuff immunity and Regen. Sadly, SoD enemies fail at debuff/status. Only bosses ever bother with it.
Bosses with Defiance are a bitch though, since I rely on combo strings a lot. Defiance increases Morale on being hit, and the higher your Morale the FASTER YOU TAKE YOUR TURN and the MORE ACTIONS YOU TAKE. So I once got quad-turned by a boss who immediately reduced my party from "full health Kyrie-Morte-Taupy" to "almost dead Taupy" and the boss went from "Ouch I almost ded" to "I am half-healed and owning you".