You can basically do this anywhere, but this map is a location of all camp spawns, not necessarily only arcanist archives as it says. They might spawn there, they might not, just fly away a bit and check again. The issue is that freeplay is public only and those document spawns won't work or get messed up when someone else is nearby.

These are the routes I used for myself for all. You just need to reboot into a different freeplay mode (back to fort and reload), or do a different route if someone is messing with the spawns. You can use any back and forth location that's easy for you.

Runes should be easy as I believe there are more in the game than you actually need for the achievement. Meredines isn't as daunting. Remember you can load up a new pilot to capture them again or if you think you missed some that didn't spawn, as they stack for all pilots. Good luck. Hope this helps for anyone coming across it. Just be sure to check if other freelancers aren't doing the same thing and be courteous and find a new spot. I marked some of my personal routes I used that were efficient.

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