After many tries to actually get the correct combination, Bloodhammer finally appeared along with the Vortex Crystals.

After a annoying session of bumper cars, we finally killed him within 3 min... But only half of the party received the achievement. I was one of the party who didn't get my prize.

This proved to be discouraging since meeting the AP criteria first requires luck. Then it needs quick gameplay to win. Finally and apparently, you also need more luck to actually receive the award.

Hopefully this will be fixed. So far Shuyal is not very impressive...