Level 1
ST 7 PE 8 EN 7 CH 4 IN 6 AG 5 LK 3
Energy Weapons, Explosives, and Repair
Ghoul Ecology
Level 2
Explosives +5 (40), Science +9 (25), Big Guns +2 (20)
Gun Nut
Level 3
Repair +4 (45), Science +5 (30), Melee Weapons +2 (20), Big Guns +5 (25)
Gun Nut
Booster Shot
Level 4
Energy Weapons +1 (36), Big Guns +15 (40)
Educated
U.S. Army: 30 Handy Flamethrower Recipes => Big Guns +1 (41)