Level 1
ST 5 PE 9 EN 4 CH 1 IN 6 AG 9 LK 6
Sneak, Repair, and Lockpick
Grognak the Barbarian => Melee Weapons +1 (16)
Level 2
Sneak +2 (41), Lockpick +11 (50), Unarmed +3 (17)
Intense Training (LK)
Bobblehead (Medicine)
Chinese Army: Special Ops Training Manual => Sneak +1 (42)