Forum:Fallout 3 character builds - The Vault Fallout Wiki ...
The primary skills are; Sneak & Small Guns. The secondary skill is Repair (have to keep our tools in good working order). Tertiary skills, and in general for gameplay, could be considered as necessary, are; Lockpick, Science, Melee, Energy Weapons, & Speech (to reduce number of reloads and dialogue run-throughs to make Speech checks).