Changed rogue feat progression and slippery mind for skill mastery. Removed another point in hide for a point in bluff at creation and traded points I had put into jump starting at level 8 for bluff due to the use of +2 tome at level 7. Hope that is not too confusing. Beyond this I think there is not much left to change, let me know...

Code:
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Deadly Shadow
Level 20 True Neutral Halfling Male
(20 Rogue) 
Hit Points: 242
Spell Points: 0 
BAB: 15\15\20\25\25
Fortitude: 10
Reflex: 18
Will: 9

                  Starting          Feat/Enhancement
Abilities        Base Stats          Modified Stats
(32 Point)       (Level 1)             (Level 20)
Strength             16                    23
Dexterity            16                    20
Constitution         14                    16
Intelligence         12                    16
Wisdom                8                    10
Charisma              8                    10

Tomes Used
+2 Tome of Strength used at level 7
+2 Tome of Dexterity used at level 7
+2 Tome of Constitution used at level 7
+2 Tome of Intelligence used at level 7
+2 Tome of Wisdom used at level 7
+2 Tome of Charisma used at level 7

                  Starting            Ending          Feat/Enhancement
                 Base Skills        Base Skills        Modified Skills
Skills           (Level 1)          (Level 20)          (Level 20)
Balance               7                 28                   29
Bluff                 0                 13                   24
Concentration         2                  3                    4
Diplomacy             3                 23                   24
Disable Device        5                 26                   27
Haggle               -1                  0                    1
Heal                 -1                  0                    1
Hide                  5                 27                   40
Intimidate           -1                  0                    1
Jump                  3                  6                    9
Listen               -1                  0                    3
Move Silently         7                 28                   39
Open Lock             7                 28                   29
Perform              n/a                n/a                   n/a
Repair                1                  3                    4
Search                5                 26                   27
Spot                  3                 23                   24
Swim                  3                  6                    7
Tumble                4                  6                    7
Use Magic Device      3                 23                   24

Level 1 (Rogue)
Feat: (Selected) Toughness
Enhancement: Rogue Damage Boost I
Enhancement: Rogue Sneak Attack Training I
Enhancement: Improved Hide I
Enhancement: Improved Move Silently I


Level 2 (Rogue)
Enhancement: Rogue Haste Boost I
Enhancement: Halfling Cunning I
Enhancement: Rogue Sneak Attack Accuracy I


Level 3 (Rogue)
Feat: (Selected) Two Weapon Fighting
Enhancement: Halfling Guile I
Enhancement: Halfling Luck (Will) I
Enhancement: Racial Toughness I


Level 4 (Rogue)
Ability Raise: STR
Enhancement: Rogue Damage Boost II
Enhancement: Rogue Subtle Backstabbing I
Enhancement: Rogue Sneak Attack Training II


Level 5 (Rogue)
Enhancement: Rogue Haste Boost II
Enhancement: Improved Hide II
Enhancement: Improved Move Silently II


Level 6 (Rogue)
Feat: (Selected) Oversized Two Weapon Fighting
Enhancement: Rogue Assassin I


Level 7 (Rogue)
Enhancement: Racial Toughness II
Enhancement: Rogue Sneak Attack Accuracy II


Level 8 (Rogue)
Ability Raise: STR
Enhancement: Halfling Cunning II
Enhancement: Halfling Guile II


Level 9 (Rogue)
Feat: (Selected) Improved Two Weapon Fighting
Enhancement: Rogue Sneak Attack Training III


Level 10 (Rogue)
Feat: (Rogue Bonus) Improved Evasion
Enhancement: Rogue Sneak Attack Accuracy III


Level 11 (Rogue)
Enhancement: Halfling Cunning III
Enhancement: Halfling Guile III


Level 12 (Rogue)
Ability Raise: STR
Feat: (Selected) Improved Critical: Piercing Weapons
Enhancement: Rogue Haste Boost III
Enhancement: Rogue Assassin II


Level 13 (Rogue)
Feat: (Rogue Bonus) Opportunist
Enhancement: Rogue Sneak Attack Training IV


Level 14 (Rogue)
Enhancement: Rogue Sneak Attack Accuracy IV


Level 15 (Rogue)
Feat: (Selected) Greater Two Weapon Fighting
Enhancement: Halfling Cunning IV


Level 16 (Rogue)
Ability Raise: STR
Feat: (Rogue Bonus) Crippling Strike
Enhancement: Halfling Guile IV


Level 17 (Rogue)
Enhancement: Rogue Haste Boost IV


Level 18 (Rogue)
Feat: (Selected) Power Attack
Enhancement: Rogue Subtle Backstabbing II
Enhancement: Rogue Assassin III


Level 19 (Rogue)
Feat: (Rogue Bonus) Skill Mastery
Enhancement: Halfling Dexterity I
Enhancement: Rogue Dexterity I


Level 20 (Rogue)
Ability Raise: STR
Enhancement: Rogue Deadly Shadow
Enhancement: Halfling Luck (Will) II