Yeah I remember during closed beta I had the dual curses and Temporal makes him quite a joke then enfeeble to make sure the rocks don't do too much damage and it's easy peasy, plus unlike other fights, vaal constantly spawn shit mobs to raise zombies from, and if he doesn't smash the zombies right away, he takes stupid high amounts of damage since zombie DPS is like 10k each or whatever stupid number. I bet if you could see the zombie damage numbers in the tooltip, people would be crying nerfs all over, when you pay attention to them and they take a swing at a normal mob you can see they lose like 80% of their health even in merciless, and that's one zombie and one swing(and on my build I didn't even have any of the dmg% nodes other than Lord of the Dead). The problem of temp chains is without the perma curse, it's really pretty shitty since base duration is like 4.5secs and increases only to like 7secs, even with increased duration on it(which boosts the mana cost to fairly obscene amounts too) it only lasts as long as a normal curse at lvl 1, so you have to recast it over and over.
I'm gearing up for him with my explo arrow, I need to grind to 66 I think it is to grab all the health nodes I can reach easily. I'm already at 3k health and I still have 8x8% to take, so it should be easy. I'm also using a new idea specifically for him, I'm using a Cloak of Flames as my chest. Doesn't have any health, but it converts 20% of the physical dmg I take into fire, and since I run Purity and Elemental Adaptation, I have 85%(well currently 83%, need to lvl purity a bit more) fire so it reduces physical damage by a pretty good amount, more so than any armor I could get. Added benefit is I get 10% chance to ignite, which synergizes well with my build, I have 78% chance to proc ignites on Explosive arrow now, and it also lasts 45% longer from the cloak. Oh and obviously this time no fucking around, I have Enfeeble leveled and prepared and I'll be graniting the shit out of him, I'll replace my ruby with another granite so I have 2 and don't have to run out as often, and I'll do him solo so I can actually kill him fast and not risk too many shit. Just need to figure out if I want to use zombies or molten shell, shell is about 1.5k armor which isn't a big deal, zombie will take aggro from random shit mobs and tank lasers but need to be constantly raised since I will have only 3.
I'm fairly confident I'll crush Vaal this time around. Just need to grind out more levels in felshrine, at least with explo arrow it goes pretty fast.