The Iron Mage
MaGiC!This will take you far and yet cost you dearly if ya don't have it.
A young mage is very fragile as many have found out the hard way. Although, if he is wise, may still prove a valiant fighter.
The conservation of mana being the most important thing to be mindful of throughout your Quest to kill Diablo Ironman style.
Swinging your CB staff, corpse axe and zombies won't stand long. FallenOnes(monkeys) are also no match for your staff so long as you keep them singled out.
The best use for your firebolt is on those sneaky scavengers, who are too quick to take half your life if not careful and well-armored.
From the warrior's skill, we know to "crush bone and cut down the living". On the first couple levels this can be done most effectively with mace and sabre(note the 17 strength req.).
If buckler can be found or borrowed from teammate this shall prove as worthy a weapon as an armament. A bow if given should be used at grates and when HP so as to preserve the precious mana. A wise mage will be able to save all his mana potions from first 2 levels
preparing for KingLeoric. HolyBolt is a must here and should be sought before attempting to bring down the King. I haven't forgotten Butch he is just better left til even the entire rest of the church be emptied of foul beasts. Or let your rogue do the deed, in Team play.