Level 1
ST 4 PE 5 EN 5 CH 5 IN 10 AG 6 LK 5
Small Guns, Sneak, and Repair
Grognak the Barbarian => Melee Weapons +1 (14)
Bobblehead (Medicine)
Level 2
Sneak +8 (40), Small Guns +8 (45), Barter +4 (19)
Gun Nut
Level 3
Sneak +10 (50), Small Guns +10 (60)
Gun Nut
Rad Regeneration
Bobblehead (Strength)
Level 4
Sneak +10 (60), Small Guns +10 (70)
Educated
Chinese Army: Special Ops Training Manual => Sneak +1 (61)
Tales of a Junktown Jerky Vendor => Barter +1 (20)
Level 5
Sneak +10 (71), Small Guns +10 (80), Barter +3 (23)
Comprehension
Pugilism Illustrated => Unarmed +2 (17)
Duck and Cover! => Explosives +2 (17)