From Kalapurna on Reddit in the post https://www.reddit.com/r/ConanExiles/comments/8lppjm/any_advice_on_solo_raiding/
Saving this because its super useful.
You want to raid them?
Spec 50 Encumbrance for unlimited carry weight.
Explosive Jar does about ~10,000 burst damage and some more in burning.
Also coating a surface in grease orbs and then launching a demon-fire orb at it will ignite the grease into a burning fire that will eat away at the building.
You can stack 12 grease orbs on a surface and then ignite it with 1 demon fire. That will burn the shit out of a Tier 1. Keep tossing another grease orb every ~25 seconds to keep the fire burning as needed.
You can also use gaseous orbs. When hit by a Demon-Fire orb they will explode. So you can coat with grease, toss a gaseous orb on top of it, and then throw the demon-fire grenade last and it will cause an explosion + an oil fire, then keep burning with grease as needed.
Use Right-Click when tossing orbs, as this will make them explode on contact. (Left Click they will bounce off walls)
Bring a repair hammer with you to see the damage you are doing.
To get 50 Encumbrance: Bearer’s Pack (+5), Light/Med chest, gloves, pants (1 each, +3), Silent Legion boots (+3) = +11
Rhino head soup drops off NPC’s up north irregularly, or you could try to make it (hard to, needs black rhino head), that gives another +3 for an hour, to +14.
That way you could hit 50 Encumbrance with 36.
From there I would recommend 30 Vitality for the passive regen and 30 agility for the reduced fall damage. I think the fall damage perk is broken/OP. you can jump off the Mountaineer trainer peak to the ground and survive easily, good for dodgy base raiding wall climbing/positioning.
Also 30 Agi gives you the no stamina when jumping perk, which is really good with max encumbrance, because if you bunny-hop, meaning chain jumps together, you will regenerate your stamina in the air, so you can effectively always be sprinting/keeping forward momentum going if you end up being chased or have to high tail it. You will outrun anyone who doesn’t have the feat.
The rest I usually dump to 15 Strength. That is +30% damage. Helps with dealing with thralls. Spears are best to use against them IMO.
If they have a vault inside, you can try to blow out the foundations underneath it. If it is placed directly on the ground, then lol gg.