[untouchable]

A note: This is Variol's FIRST run throught SOA, at least it seems so from his post on the TOB forum, so let's try and minimize the spoilers.

Shadow's require enchanted weaponds to hit. Some shadows can also drain stregth with each hit, this causes you to be less accurate and deal less damage.
There are many Undead specific weaponds in the game, some of those will help. Many spells will have more effect against Undead as well.
Remember that using haste gives you a extra attack per round, this can be a life saver in the early game.
Summoned monsters can also be a great help.

For more specific advise post who you have in you're party and what lvl they are as well.

Happy gaming.