That's the achievement for checking the Voidstone after Atmos has been defeated. The original question was if you get a lodestone history achievement if one defeats Atmos with claim (red name).
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Update: there are 4 Foundation day Achievements for Lodestone, 1 lodestone achievement for cluster and 1 UI achievement for cluster.
Still waiting to see if there is a NM achievement for killing atomos.
My party got claim on Atomos one round. When he died we didn't get a defeat message and nothing has shown up on my history. so guess there is no achievement for kill
How do you get prisms? No one wants to give it ti me when I talk to them
When he dies, you'll notice everyone swarm to where he died. This is because there is a Voidstone that pops at his death spot. You need to click on that (It you can target it through the mass of players...I use tab) to get your prize...keep examining it until it disappears...
What exactly are the prism's for?