I just realized somebody got this achievement today, but there aren’t 90 races in the game, so I don’t think it’s obtainable?
I’ve been doing Sigils as I get them, and currently have 51 unique Primals done. When I get a chance, I will make a list of my current status of each ‘race’ and will record when my unique # goes up and whether or not I had already done it. I say all this because this morning (my time), I did a Primal Sigil of the Minotaur. I had already done 1, and this counted as another Unique, so I’m honestly not sure what a Unique counts as. I’ll keep a running tab below.