A few general Tipps:
For a 2h warrior the armor is more important than for 1h+shield, so use the best equipment you have for the dungeon (for example, fire resistance against fire enemies and so on). Also spend a bit more points for END at the beginning and take always a few health potions and a scroll of recall always with you, that way you'll survive longer at low level. For the damage STR is very important, also use some skills to control crowds, cleave is a must have for a warrior (also Fury).
Another Tipp, you can try a cleric with 2h and warrior guild, he is similar to play but can survive longer