Yep it was that one with the 3 barriers... Lol. Took me about 6 or 7 attempts, the Vandals light rifles were one shot killing me and the boss is a bullet sponge, especially without power ammo. Like yourself, I couldn't figure it out until I finally did it and realised I was 20 or 30 light under levelled. DOH! Still I love it all the same, finding all this shit out for myself! Big thumbs up for D2 at the mo.