Thirdfain wrote:This is a very simple question. I'd like to have a multiclass Fighter/Thief, with the whole point of the thief bit being to hide in shadows and then backstab people very hard.
Can dual-classed Fighter/Theves backstab?
Alright, first of all, multiclassing is different from dual-classing--it's confusing, but there is a difference.
In answer to your question on whether multi- and dual-classed thieves can backstab:
Yes. Yes they can. In fact, they're quite good at it. If you have Throne of Bhaal, then you have excellent dual-class options. The only exception to this general rule is if you dual-class a Swashbuckler, of course, in which case the thief has no backstabbing bonus.
Good dual-class options: Wizard slayer-Thief. In ToB, you'll have items that can raise this character's magic-resistance to near 100%, so it's actually useful, and the backstab lets you kill a mage in one-hit, reliably, then move on to another or a cleric that you can prevent from casting spells with a flurry of quick attacks.
Other good choice: Kensai-Thief. The thief has access to a HLA in ToB that lets him wear any armor, even though you should restrict it to the leathers so you can use your hide in shadows ability.
Final good choice: Assassin-Fighter (or anything, really). I haven't tried this one myself, but it should work. The only problem is you have to REALLY crank the Assassin levels to get up to the 7* backstab multiplier, which is the only reason to choose an Assassin.
Any of the multiclass thieves can backstab, and most of them should use that option. Just be sure that you have a weapon suitable for backstabbing, if that's your style.
I never found multi-classing to be an effective option for most characters in the original game--the EXP cap was too low to let the characters really come into their own (with only a few exceptions), so if you're only playing through BGII but not ToB you should carefully consider the level cap you're going to be looking at before deciding on multi-classing.
The exception to that rule is the druid--if you're playing BGII alone (and not ToB), a druid should almost ALWAYS multi- or dual-class, since they "waste" the last half of their experience points without a single level up (the cap for them is a miserly level 14, IIRC). You can get a level 13 druid/14 fighter--a much better character, in the long run, or (perhaps) even get the pivotal 14th level in druid if you go fighter->druid, giving you the final level of spells.
The other really good multiclass in the game is the Cleric/Ranger, which has access to druid spells but also the benefits of a cleric.
Thief/Fighter/Mages are rumored to be good, but I found their spell selection too limited, as were their skills, to help me through the game. I generally found it much better to have a separate thief/fighter and a mage, but for soloing the game they're good.