Longswords in my opinion with maces or flails as a secondary weapon when you fight foes with slashing resistance. If approaching your character from a purely powergaming point of view then half-orc for 19 strength. I'd also personally consider fighter/mage/thief rather than fighter/thief, you won't lose much THAC0 and will be much stronger defensively with mage buffs like mirror image and stoneskin, and also much stronger offensively through disables and summoning spells.
Backstab enemies. A lot.
In many encounters, you'll be able to sneak in using stealth and one-shot a single enemy (e.g. a nasty Orc Shaman leading a group of Orc Warriors) with a backstab before the actual fight starts.
In some cases, you'll even be able to run back out of sight of the enemies, go to stealth again, and do a second backstab.
To use the Stealth ability effectively, put thieving skill points into both Move Silently and Hide In Shadows on level-ups until you reach 100 in both.
(But spare some points for Open Locks and Find / Disarm Traps - you'll want to have those over 90 by the late-game, too.)
Make sure to use weapon types that support backstabbing (Long Sword, Short Sword, Katana, Scimitar, Wakizashi, Ninja-To, Dagger, Club, Quarter Staff). I second @jsaving's recommendation of Long Sword - they're the best weapon type in the game as far as item availability is concerned.
As for weapon styles, dual-wielding will maximize your damage output. (But only once you've got 2 points in dual-wielding. Before that, wielding a single Long Sword makes more sense.)
Comments
Backstab enemies. A lot.
In many encounters, you'll be able to sneak in using stealth and one-shot a single enemy (e.g. a nasty Orc Shaman leading a group of Orc Warriors) with a backstab before the actual fight starts.
In some cases, you'll even be able to run back out of sight of the enemies, go to stealth again, and do a second backstab.
To use the Stealth ability effectively, put thieving skill points into both Move Silently and Hide In Shadows on level-ups until you reach 100 in both.
(But spare some points for Open Locks and Find / Disarm Traps - you'll want to have those over 90 by the late-game, too.)
Make sure to use weapon types that support backstabbing (Long Sword, Short Sword, Katana, Scimitar, Wakizashi, Ninja-To, Dagger, Club, Quarter Staff). I second @jsaving's recommendation of Long Sword - they're the best weapon type in the game as far as item availability is concerned.
As for weapon styles, dual-wielding will maximize your damage output. (But only once you've got 2 points in dual-wielding. Before that, wielding a single Long Sword makes more sense.)