Aerial, big thanks for the guide - you seem to never disappoint. Followed it for the most part (I'm picking signets, got a little better armor/weapon than selected) and i can't deny it works and most of the time it's smooth (even for me when i played only one season). Got last few guys left to beat.
My 5 cents to add:
-I approached Ball differently. Baited him to the entrance when you land, spamming fortress and running around that room there. Mobs he spawn will follow you and blink, while Baal itself with lower aggro range won't. So once one spawned, i gitan'ed to the bridge up, minion followed, got killed and whole process continued. The mini-bosses he spawns also have bigger aggro range although they do not blink. Once I flashed to bridge then, i just went to the corner and waited for them to approach me by themselves, while Ball happily waited for me standing still.
-Xazax. I did the boss almost the same way as with Ball. If you never try to melee, him he will spawn less mobs. I kept spamming fortress, watching if arrows' graphical animations is directing them on the boss, while not seeing the boss itself. Some golems spawned, just lured them to the corner (right one) where boss weren't at and died, having tp ready at the entrance of previous location. Kept avoiding his spells and using pots when poison hit me (I didn't take any special items, just standard and only 200 pres). Even if one of the guys approaches you, with the FRW mo's and the gear from your guide you can just tag along with him and not get hit. When 2 comes then its good time to die in the corner. Took <10min and had like 8-10 mobs spawned.