So, we're starting at level 10. We get some armor, a single weapon, and either an amulet or a ring (but he never mentioned limiting price on said piece). We also get 500g to start with. No enhancement bonuses on any of the pieces. We're doing a weird variant of the 4d6 ability score rolls, in which I get 85 points to work with (18 being the highest in any score before racials).
He also said Gestalt, anything from D20pfsrd.com is okay with him, or any 3rd ed book we have access to, of which I have several including Tome of Battle.
So I'm going with a Tiefling with claws and a prehensile tail, Fiendish Heritage feat (Demon-Spawn). Going Crossblooded Sorcerer with the Draconic and Elemental bloodlines, then taking Eldritch Heritage to grab Abyssal. I'm going with the Fighter variant of Armored Mage which gives up medium and heavy armor proficiency for the ability to cast in light armor with no arcane spell failure. Then I'm leaning heavily on Unarmed Fighter or possibly Two-Weapon Warrior. Throwing myself into Dragon Disciple and Warblade.
At 20 (he's mentioned the possibility of going to 30), I should be sitting at 9th level casting, 8th level maneuvers, about +7 natural armor bonus to assist with that light armor, +4 strength from Dragon Disciple.
It looks good mechanically, at least in my eyes. But I've looked at it several times and can't come up with a way to deal that high number damage I know the GM is looking for. Apparently he builds 'em brutal.
Can anyone come up with a little bit of assistance? You think I'm just looking at the positives and ignoring negatives?