It is feasible to equip a Warrior to tank for you even on Insane Difficulty with the Tactics Mod installed. I dunno where you got those 80 damage hits from... but last I recalled, Admantium Golems do not roam the grounds of Waukeen Promenade.
Excluding Boss-Type Monsters, AC will save your tank, requiring monsters to score a critical hit in order to hit you. Note... this is against non-boss-type monsters. You will need to tool up differently in different situations.
Resistances is also king. Do not worry about Magic Resistance, just slap on the Cloak of Mirroring. Concentrate more on elemental resistances, especially fire and acid. Ring of Gaxx will render you immuned to Poison. Cold damage is rare, excluding the Improved Ilynich Mod, and most electrical damage is minor.
You will still need protection from psionics and mental spells, so this is where Chaotic Commands from your party Cleric comes in. Lilarcor, Equaliser and the Shield of Harmony can serve as substitutes.
Ring of Free Action is essential.
To protect against level-drain, we have the Mace of Disruption +2.
It will not be as easy as the backline people, but that is the price you pay for being in the frontlines. Just tool up properly, and your tank can be near-nigh invulnerable as well. [img]smile.gif[/img]