Last Mission
Final Fantasy X-2 is an optional mini-game of sorts added to the international and HD Remaster versions of the game. Most players’ first and only exposure is noticing it as a menu option alongside “Final Fantasy X: Eternal Calm,” but it’s not a fully formed game like FFX and FFX-2, so most people skip it.
If you’re a die-hard Final Fantasy X fan and want an extra challenge and a bit more time with the lead characters of X-2, this game is worth a playthrough. The additional lore is nothing to write home about, so if you lose interest after the first 10 or so floors, it doesn’t deviate much from the formula it establishes early on.
That being said, there are a bunch of achievement/trophies tied to “Last Mission” for players who are going for 100% completion, including 
Just Starting, Still a Ways, Midway Through, Almost There, 
Tonberry’s Treasure, and 
Giant Tower.
It’s recommended that you read through each of the sections below to gain a better understanding of the flow of the game and make traversing through the floors much easier, and then use the floor-by-floor guide at the bottom of the page as you make your way up the tower. Good luck!
How Last Mission’s turn-based board works, how it differs from the main game, and why it pays to keep multiple save files.
The controls for Last Mission and some tips to streamline the way you navigate through the floors of the Tower.
How moving around each floor works, how turns play out on the board, and what you’ll find on it.
How your level works in Last Mission and how to raise it as you climb the tower.
Each Dressphere you can find in the tower, what it’s good at, and how to make the most of it.
The auto-abilities in Last Mission, the accessories that grant them, and which ones are worth keeping equipped.
How to manage your inventory, plus the potions and folios you’ll pick up in the tower and what each one does.
Tips for making the climb up Iutycyr Tower easier, including how to steal from the Founder, advanced movement techniques, and more.
How to reach the hidden Tonberry area in Iutycyr Tower and claim the treasure inside.
