I found a way to solo these as a level 51 WHM/RDM! (btw, this can be very beneficial for skillups! ^^)
Start by setting macros for switching between custom gear (or comparable for whatever race), and this particular set (or similar): Blessed Hammer, Holy Shield, Holy Breastplate, Custom Gloves (or comparable for whatever race), Custom Boots (etc.), Wool Hose, 2 courage rings, and 2 Wing earrings.
Also set a macro to switch between the hammer/shield and the Light Staff. (optional... for better healing.)
Start with your Custom Set (or whichever depending on race), heal to max, cast Protect III, Shell II, Blaze Spikes, and Enthunder, then engage battle with Dia II and macro to your other gear set.
From here, the battle is cake (assuming your club skill is level 110+), and all you have to worry about is keeping En-spells and spell-spikes up as well as healing.
I'm sure there's an easier way, but this is my method and it helps weapon skills alot! ^^b
These are a good mob to exp off of for a level 50-51 DRG/mage. The exp isn't nearly as good as a party, of course, but you can get 50-70 exp per mob, and it's a fairly easy kill (as opposed to some of the other mobs that are out there).
I was in a party of 5 last night and our puller wanted to try the big Hell bat.He was killed on the first turn.we were all leveled in the low 20s.The only surviver was the fastest runner...
Actually, that's an understandable mistake. If you're trying for something a little more valuable in terms of EXP, and you're in the Dunes, you may try this cave.
Still not smart to consulte a website first, but it's understandable.