Ancient Magic

[tim_browne]

They need to implement a feature to track which enemies you've used ancient magic on or else its going to be impossible to keep track with enemies you've already done to get that one achievement

[Mr. Bufferlow]

Just change your main trait on all your stuff to ancient magic and do the battle zones a few times. I think I did all four at least once and a couple specific ones three or four times and got the win!

[EricHVela]

That's the one cheevo I don't have. I'm not going to try for it. I did the grind for the inventory space and seeing if 100% of the Hitchhiker's Guide before the end would affect the final conversation (and oodles of cosmetics I never used on my student—weather appropriate of standard student outfit transmog only because I can't stand the "there's no way a school that has a uniform code would allow this" look).

(Save you the trouble: Still says to keep filling up the guide even if already 100% before having that last conversation. Bummer.)