Hi
Playing the regular (vanilla) BG1 + expansion, my party with good AC -4, -3 tanks get massacred by the bandit archers when we invade their camp... I don't remember them being so tough, hitting almost 100%.
Are they supposed to be so hard (when you don't use ruse to come in)? I would almost think it's a bug happening sometimes in the game where your armour doesn't count or something.