I completed this this morning and didn't get a 320 artefact. Got the 320 weapon, emblem and fragment tho.
Is the artefact a guaranteed drop and I just -blam!-ed? It looks like it is
English
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It's guaranteed! Check your postmaster...as long as you beat challenge mode on heroic difficulty you'll get a 320 artifact.
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Damn. I thought it was guaranteed. No slot wasn't full. Only had one other artefact in the group and there is nothing at the postmaster. I'll run it again and hopefully it'll pop
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Is your artifact slot full? Check your post master
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Check postmaster. Guaranteed drop. Got all three yesterday.