[apoger]

>You could also try a few flying commanders with snake bladder sticks put on hold for a few turns and then attack rear (if he's not immune).

Immunity is why I suggest the duskdaggers. Nothing is immune to armor negating damage, and the giants high strength really exploits this. If you aren't worried about immunity the snake bladder sticks (need to be immune yourself for best results) or lightning spears are both great.