I want to hear people's opinion on this PC's build and her future's prospect.

Mangamancer

My current PC is like this
Shadowdancer(9)->Fighter ( need that backstab x3, and reasonable amount of thief points. )
Female Human
Neutral Evil ( want to be able to wear human flesh armor )
Strength 18
Dex 18
con 18
Int 12
Wisdom 3
Charisma 18 ( stat requirement for dualing shadowdancer is already high, so might as well max it )
Put all thief points in Move Silently and Hide in Shadow, end up with 120 MS and 125 HiS at the end.
Put all proficiency points in quarterstaff and two-handed weapon style.
( Heard that staff is the best backstabbing weapon )

My aim for playing this build is to be a character that can backstab with good thac0
but can also hold her ground in melee. Being able to stealth in front of enemies is also a huge boon. )
So far I'm Having a good time in chapter 2.
( I cheated a bit and import her to the beginning of SoA once she regain her shadowdancer abilities.
So that I can experience backstabbing enemies since the beginning,
which make me and my party a bit overlevel )

But I Have heard that later on there will be so many enemies that are immune to backstab
or see through stealth , especially in ToB.
Will my PC lost most of her advantage and become no better than a pure fighter later on?

Lastly, is there any not well known bonus for being in stealth in combat other than
1. enemies can't see you before for get in position and attack.
2. bonus to hit roll for attacking form stealth( +4? )
3. backstab damage multiplier
There is no other bonus such as saving throw or penalty on enemies to hit roll right?
Unlike invisibility from Spells?

borntodie

The problem with this build is that you are going to be very fragile, as any thief. Missing out on the bonus HP means she will never have the robustness of a warrior.

It's also a pity that you will miss out on UAI, especially as a staff specialist. The staff of the magi is one of the best weapons in the game.

You are also limited to half-decent, but not great stealth values.

Honestly I think a multiclass warrior/thief is what you are really looking for. That way you get great HP, thac0, APR, but also keep growing your thief skills. And then you get better HLA's, including UAI.

jsaving

I agree that fighter/thief will be a more effective melee combatant and a better backstabber than a dualed character. In addition to the factors mentioned by born, you'll end up with a higher backstab multiplier and the ability to use thief trap HLAs (which are very strong and work on foes who can't be backstabbed).

One other option you might consider is a fighter/mage/thief. This may seem jarring at first glance ("you want me to melee in robes?") but mage spells actually have surprisingly solid synergies with melee/backstab.

If you do stick with a dual-classed shadowdancer/fighter, I'm not sure there is a great argument for choosing staves rather than, say, celestial fury. People like staves not because they're innately good but because one particular staff, the staff of the magi, lets you stealth in front of enemies without necessarily needing to put any points in hide or move silently. Without UAI that staff will be off the table for you, though to be fair you'd dish out enough DPS with other staves to be a perfectly viable character.

Mangamancer

Wait! Why did you guys say this build is weaker than fighter/thief combat wise? or more fragile?
Didn't she get everything a pure fighter enjoy after I finish dualing her? especially HP and thac0 wise.
was there something she missed other than having 110,000 exp lower than a pure fighter,
which isn't a big deal and if anything should made her fighter part stronger than a fighter/thief.

borntodie

She gets the same thac0, but her HP will be (nearly) as low as a pure thief.

When dualling, the first guild you level up determines the number of HP you gain for those levels. You only start adding additional HP after the level in your second guild exceeds the levels in your first guild. So in your case, the first nine levels you get your HP at the rate of a thief. Fighter only starts adding HP from level 10 on, but at that point you gain very few additional HP.

ThacoBell

You can complete the game with any build, so if this is a fun concept for you, have at it! From a powergaming perspective, you always want to start as a fighter and then move into the otehr class.

Mangamancer

I had always thought hit point form dual class is using the higher one of each single class.
Now I know that isn't the case at all. Thank you.