Mid Game+ magic.

[shovah]

if you want something quite cheap vrs ermor then use (as said) a charcoal shield+herald lance on something flying(winged shoes on it if it cant fly)
golems are really good for this with their self buffs and something like jade armour will help get those buffs done quick.
and of course if he summons any big nasties or if you need an sc killer a golem with a gate cleaver is pretty good.
for any golem i would suggest ring of the warrior and a defence increasing item for misc slots