Well a lot has happened since I last posted... Figure I'll update just to kinda swagger about.

Just beat Ultima Weapon. No idea how much HP he has in the mod...a poster on the Insane Difficulty forums estimates around 300K.

My Setup:
Level 100 Squall- Spd+20%, Spd+10%, Auto-Shell, Auto-Haste
Level 100 Rinoa- Spd+20%, Spd+10%, Auto-Potion, Auto-Haste
Level 100 Quistis- Spd+20%, Spd+10%, Auto-Potion, Auto-Haste
Squall with 99 Ultima's from Shumi Draw Point and farming Energy Crystals from Ruby Dragons.
Rinoa with 100 Ultima's from Dark Matter.
Quistis is kinda just there as healer/buffer.

Naturally I wanted to go in there with HP+40% but that was a waste of an ability slot. Everyone has around 6,000 HP and with Shell that's enough to let you comfortably survive Ultima 2. With my 100 X-Potions I got from Gil Farming via making Mega-Potion recovering 5,000 every time Quistis or Rinoa got hit, we were pretty much always safe.

Except from Light Pillar of course... Bleh. I got him down to 40,000 HP on one try and he did LP three times in a row. That's when I decided I should try out those Phoenix Pinion things. I had 4,000,000 Gil stocked up so I just used Call Shop to the Esthar Item Store, bought Mega-Phoenixes and refined them into Pinions, and repeated until I had 100 Pinions. I think they will save you from game over? Luckily it never came to that but they were great for reviving my other two party members when they died a few times due to that damned Light Pillar.

But yeah, as you can tell from my setup, speed was the key. You need to keep all three characters alive and make them as fast as possible. I wanted to give them Mag+30% to try and make things go faster - since Ultima was only doing at most around 3,000 a hit so even with Triple each character wasn't doing more than 10,000 - but it's not worth it. You need to be constantly reviving people.

Towards the end, he'll stop using Gravija and his other magic and just sword attack spam and Light Pillar. Even with Auto-Haste and Triple junctioned to Spd plus Spd+50%, he still got two sword attacks in a row before I could do much. Luckily Auto-Potion saves the day.

Yeah...it was long and very challenging. VIII's Ultima Weapon is one of my favorite superbosses. It looks awesome, it has a great introduction, and the music chosen for the boss fight is perfect. Now that it was actually difficult, it's the best.