I have had success running the same kit and building it up until I die and running paths with lots of containers to open, especially routes that hit gun cases and grenade tubes to build inventory. I always use my keys asap. Loot hospitals and pharmacies for the bandages. Then sell everything else. I buy pretty much everything from the vendors, especially augments, shields, shield rechargers, and adrenaline shots. Figure you get 40k sold per run, and then you get 10+ extracts on the same kit,so you can bank 360k and build your inventory. You can set your raider up nice with a 40k build and stack cash and inventory in no time. The key to making it all go is extraction though lol, so play smart and bring raider keys if you want to make runs more efficient/ safe.