 Interesting find...
Though I may be late in finding it. The Summoned Axes the Vah Shir Berserker creates can be upgraded with items like Ghoul Flesh. As long as your Axes never run out, the item stays in them. Once they run out or your skill upgrades increases the damage they do, your upgrade is lost.
I thought I'd pass that on.
Another interesting find in the Plane of Torment, where you have to carry the fire to torches to open up bridges, you can have a time advantage by placing you partner 1/2 to 1 screen closer to the torch while the other player is at the fire. Both run for the torch, the one that is in the lead can light the torch even though they didn't take the fire.
Nice way to get a boost in multi-player. If you didn't bother to open the whole circle near the Citadel of Pain, you can use this to open the path to the Citadel. It's not possible with out completing the circle otherwise.
On a side note, the Tormentor was really tough. I can't see how a single player could do it. I'll have to try later.  | 
Linear Mode
