You don't need a high DEX to your tank unless he is a Barbarian. If you really want your MC to be the tank, I'd recommend Fighter 7/Barbarian 3. Rage makes you take half damage and you can wear heavy armor.
In the reveal, there is a fight against a dwarf that wears a full plate, which is 18 AC, so you can get it very early. With shield and defense you'll have 21 AC, plus taking half damage from attacks.
Edit: You can buff your tank with shield of faith and haste to reach 25 AC without magical gear.
Last edited by Danielbda; 27/03/20 06:34 PM.