A bit anti-climactic for what we had to go through to get to the top but a boss is a boss. All you have to do to win this is spam meteor. I show my stats and items at the end of the video. Defeating the Tower of Agito gives you the proof of agito which gives all buffs and can only be earned once. I did this on Agito Difficulty. I will post video tutorials showing how to defeat each floor starting with the 100 tonberries. Be warned: The tower of agito is VERY tough and time consuming. The longest floor to clear is the one with 100 King Behemoths (took me about 45 minutes)
The item that allows me to cast without using MP is called the SP helm. Its earned after reaching 70,000 SPP and it also gives regen, trance and Aura.
There is no trophy for clearing the Tower of Agito which is strange since its the hardest dungeon in the game
I had to mute the in game battle music because Square Enix claims copyright on it, sorry guys