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Do the Uncanny and Lost versions of the weapons count towards the achievement or do I just need the standard ones?
Just the Normal ones.
the uncanny ones counts for the trophy, I got the platinum trophy on the base game with half of the weapons on uncanny versions. hope this helps
Both of these replies sucked. You can get the achivement with any combination of all the weapons. So if you have a lost version of one weapon but the normal version of all the others, it's still fine. Mix and match how you like.
You can buy the uncanny and lost versions in the lower pthumerian labyrinth with the chalice glyph: sumu39jc
Get you get these without getting the dlc?
they exist in your game so that invaders and whatnot can use them but I don't think you'll be able to use them yourself