Go through tunnel that has that giant training golem in it and look for one tall boulder and one short boulder that has a walk space in between them and the quest will complete.
Coords for exact spot is X = 4429.76 Y = 5033.64
Just got this as a random drop from a Hobgoblin Char near the bind stone closest to spirit manor / small thronefast bridge beyond the crossroads. New stats are:
16 AC
+1 Dexterity
+1 Agility
Item is both Unique and Magic now.
dropped today on Aevos. I hadn't seen this before today's patch, and i've seen 2 of them now. Not sure if the previous one dropped from the same mob type or if it's random to all the hobgoblins in this area or what.
Muck-Stained Bracers Leather 7 AC +1 Dex
usable by War Mon Rog Clr Pal DL Rng Dru Sha Brd