So, I've got a chance to play a 13th level character in a new campaign, and decided I wanted to play a halfling rogue.
My goal was a competent two-weapon fighter who is capable of consistently gaining flanking, can put out significant damage, and is still able to do all the things expected of the party rogue. This is what I came up with.
(20 point buy, 140,000g starting gold)
Strength : 10 (+0) 12 point buy - 2 racial + 0 level + 0 misc
Dexterity : 26 (+8) 17 point buy + 2 racial + 3 level + 4 misc
Constitution : 12 (+1) 12 point buy + 0 racial + 0 level + 0 misc
Intelligence : 13 (+1) 13 point buy + 0 racial + 0 level + 0 misc
Wisdom : 10 (+0) 10 point buy + 0 racial + 0 level + 0 misc
Charisma : 12 (+1) 10 point buy + 2 racial + 0 level + 0 misc
Racial Abilities and Features
Keen Senses
Halfling Luck
Fearless
Fleet of Foot
Improved Evasion
Improved Uncanny Dodge
Sneak Attack +7d6
Trap Sense +4
Trapfinding
Rogue Talents
Finesse Rogue
Resiliency
Combat Trick (Improved Two-Weapon Feint)
Trap Spotter
Advanced Rogue Talents
Crippling Strike
Opportunist
Unwitting Ally
Trait #1 : Dirty Fighter
Trait #2 : Fast Talker
Level 1 Feat : Two-Weapon Fighting
Bonus Feat : Weapon Finesse
Level 3 Feat : Weapon Focus (Short Sword)
Level 5 Feat : Combat Expertise
Level 7 Feat : Gang Up
Level 9 Feat : Improved Two-Weapon Fighting
Bonus Feat : Improved Two-Weapon Feint
Level 11 Feat: Extra Rogue Talent (Unwitting Ally)
Level 13 Feat: Combat Reflexes
Armor : Shadowed Celestial Armor
Belt : Belt of Incredible Dexterity +4
Body :
Chest :
Eyes : Eyes of the Eagle
Feet : Boots of Elvenkind
Hands : Trapspringer's Gloves
Head :
Headband : Circlet of Persuasion
Neck : Amulet of Natural Armor +2
Ring #1 : Ring of Protection +2
Ring #2 :
Shield :
Shoulders : Cloak of Resistance +2
Wrists :
Weapon : Menacing Adamantine Sword of Subtlety +1 (+20/+15, 1d4+1)
Weapon : Mimetic Mithril Sword of Subtlety +1 (+20/+15, 1d4+1)
Weapon : Masterwork Shortbow (+19, 1d4)
When flanking, attack routine is: +28/+28/+23/+23, 1d4+7d6+6
With this build, I have high accuracy, solid damage, decent AC, decent saves, consistent ways of flanking (particularly if the GM lets me use Gang Up + Unwitting Ally for positional shenanigans), and a decent chance at feinting for those times that I can't get flanking. I also excel at the expected rogue skills (+35 to Disable Device, +31 to Stealth, +23 Perception that goes up to +29 vs traps).
Anything I'm missing?