This from someone who's played through BG. I recall taking down legions of kobolds, orcs, orges, gibberlings, wolves, bears, and skeletons with 1) shoot arrows, 2) pause every five seconds as you select a different target for your archers, 3) continue until the enemy gets near, 4) run off until they stop chasing you, 5) come back and shoot more arrows. That's 75% of the fights right there. Though when I was really feeling saucy, I had Minsc stand in the middle of a crowd while my archers picked the opponents off one by one.
Wow, you were pretty **** at the game.
What? It's a cheap tactic that will win a huge amount of fights. It's one of the reasons BG II was a much better game.
Nope. It's an MMORPG. Why would it have a single-player campaign? You might want to try something like Guild Wars, which has no subscription and is highly instenced.