As title said, I got 11k on the Omen Raiders game several hours ago, which cleared the 10k achievement, which supposedly grants the Powdered Crab Claw item, and the achievements page confirms this, but only the 1.5k item (the beanbag) appeared in my inventory!

If you're missing achievement prizes you can file a ticket here and they will give you the item. :)

[Edit] Too, slow...

Yeah, it was. Thanks.