Anyway, I ran into Kvazz at one point and we decided to go do the Valley of Sorrows augment NM after duoing for a while. He brought a SAM friend along and we went and poked it a few times. Turns out the turtle is very fragile and exploded after three weaponskills. We came out with an INT+3 weskit (lucky taru >:|) and the rest was junk. After seeing how weak the turtle seemed to be, I thought I'd go challenge it myself the next day. I was worried about it having en-petrify or something similarly lame, but I went ahead and poped it anyway because I was sick of getting nothing from Sky. So the one I get was:
-Immune to sleep
-Immune to poison
-Absorbs Ice damage
-Takes 50% wind/fire damage
-Takes 5% Thunder/Earth/Water damage
-100% En-curse effect which halves HP/MP/Movement speed
I wasn't happy.

Somehow, I managed to win eventually by kiting with Bind/Gravity (not terribly easy without any terrain or much room for maneuver and killing it with bio/drain/Fire III. It's a good thing I was carrying holy waters, otherwise that curse would have been the death of me. In addition, I knew it could be dangerous so I opened with chainspell, only to discover the only nuke doing damage was fire and that was doing half damage, so I wasted my 2-hour figuring out which elements would do damage instead of spamming drain.
Of course, my efforts were rewarded with a bow that was actually no better than I would get in sky. I'll give it one more try, if that doesn't go well, I'll stick to sky.