I have only played the single player, and only opted for the Conjurer class. Ogre lords are the most helpful, I think. Smooth on my machine. Spell effects are great for 640 x 480. The incineration effect with fireball spells is cool.
Sound is appropriate.
No complaints here. I have never played Diablo but by the looks of it,it looks much better. I love the gameplay and graphics. I suggest u choose the warrior class if ur a beginner. Gameplay is very smooth if u have a good comp.