Even Wayback Machine doesn’t have anything saved from Unofficial Secret World Legends Forums (expect front page, nothing from forum) so all the builds and other guides are gone for now.
I really hope devs behind that site lets people have access the the stuff so we can at least move the guides into this official forum without need to retype everything…
So for now, we got TSWDB, Extraordinary Gear and Theorycraft (spreadsheet), Agents (spreadsheet) and CryGaia
Some stuff at Unfair may still be true, but it’s mostly outdated information.
Monster kill achievement guides are found at TheBadgerss forums.
Almost every mod will be found at Curse - SWL.
And don’t forget there is lots of helpful people at custom #Sanctuary chat ingame.