

All SPECIAL play a role in survivability.Junk is separate from these things and very different, but if you aren't concerned about junk then perception is your stat. Perception is useful for finding weapons, outfits, and recipes.The amount of caps found linearly increases with luck, so focus on it if you really want caps. Luck is the stat used for determining how many caps an explorer finds.Even with rad immunity though it's still good to give them a few RadAway in case they stumble upon a random quest and need it. Endurance also provides radiation resistance in the wasteland (only the wasteland, not in the vault or while questing), and at 11+ endurance a dweller is immune. Having high health from having leveled with high endurance will greatly increase the survivability of any explorer. Endurance is by far the most important, see 4.1 on dweller health.See 20.1 for the breakdown of SPECIAL during quests. Random quests found by explorers use quest mechanics, so PAL are your stats if you care about those, agility and luck being very important.
