I like monks more than rogues so this one is more monk than rogue. 12/8 mnk/rog to be exact.
Lawful Neutral Halfling (human works just as well but I think they dance funny)
Stats 15/15/15/8/15/8 with a +2 Dex and Int tome at 7 all levelups into strength
Level 1 Rogue Feat: (Past Life) Past Life: Rogue
Feat: (Selected) Two Weapon Fighting
Levels 2-10 Monk Feat: (Monk Bonus) Dodge
Feat: (Selected) Stunning Fist
Feat: (Monk Bonus) Toughness
Feat: (Monk Path) Path of Inevitable Dominion: Fists of Darkness
Feat: (Selected) Power Attack
Feat: (Monk Bonus) Improved Sunder
Feat: (Selected) Improved Two Weapon Fighting
Levels 11-15 RogueFeat: (Selected) Improved Critical: Bludgeoning Weapons
Feat: (Selected) Cleave
Levels 16-18 MonkFeat: (Selected) Greater Two Weapon Fighting
Rest Rogue
I backloaded the rogue levels to let you take better advantage of the skill points and also unlock touch of death by level 10. Feats are set up to allow Ninja Spy and Assassin to be selected as soon as the class levels are high enough.
Edited: Realized I had 15 charisma in there like this was a 41 point build or something.