[Corinthian]

The vampire will just skelly spam terminus to death so thats not an option.

As for the Blood vine guys, try sending tough guys with high MR and morale. Have them hold and attack in the back. The mages will waste their fatigue and gems and the few spells that can reach all the way back there are either imps or not very accurate. And if you can kill the vines where the enemy mages cant hit you then thats so much better. Once you have killed the melee enemies then the enemy might have lost enough HP from dead vines and dead bloodslaves that they rout. If not then there is a good chance that the mages are unconscious by then.