...And Chew Mana Buns

I have killed many non-trivial demons on Argus.  Killing these demons has achievement rewards such as:

We came here for Two reasons - Slay 100 non-trivial demons in Krokuun, Mac'Aree and the Antoran Wastes.

To Kill Demons... - Slay 500 non-trivial demons in Krokuun, Mac'Aree and the Antoran Wastes.

and finally,
...And Chew Mana Buns - Slay 2000 non-trivial demons in Krokuun, Mac'Aree and the Antoran Wastes.

Which rewards a mount, Bleakhoof Ruinstrider.

So what are non-trivial demons?  Basically it is anything on Argus not just elites and rares but pretty much any mob.  The only ones that do not count towards these achievements are some of the small imps, but not all.  The imps around Collector's Hovel in Antoran Wastes do count.  To fulfill this achievement there are often groups you can join through the group finder or just farm it alone.  Most mobs respawn fairly quickly but really, you will get this achievement anyway just by doing world quests and other achievements on Argus so there is not need to farm it unless you want it in a rush.

Happy demon slaying!
(Just saw there is an additional achievement after ...Chew Mana Buns called And We're all Out of Mana Buns - Slay 5000 non-trivial demons in Krokuun, Mac'Aree and the Antoran Wastes.  Phew thats a lot, looks like I got some more demons to kill as this achievement rewards the title Demonslayer).