Final Fantasy X-2/Chapter 1/Luca

Take Back the Garment Grid!
As soon as the opening Full Motion Video ends, the first battle begins.

Begin by using Rikku to Steal from each member of the enemy party. She can take Budget Grenades from the Goons and Hi-Potions from ????. These can be useful for this battle and the upcoming boss battle. Using a Budget Grenade in this battle will nearly kill all the Goons and cause heavy damage to ????. Chain attack with both Rikku and Paine by issuing commands in rapid succesion or have Paine use her use Power Break, found in the Swordplay sub-menu. If your HP gets low, have Rikku select item and use a Potion.

Afterward the battle with Yuna's impersonator, you will be transported to Dock 1. Follow the impersonator. The enemies here in random battles are really easy. You can use them to level Rikku and Paine, but there are better areas for that, so best just to attack. On Dock 2, make sure to stop and press psx: x while standing next to the large cowering Moogle hidden next to some crates. She will heal you and unlock a later scene, as well as raising your completed percentage.

The Leblanc Syndicate
When you reach Dock 3, you will be confronted by again by ???? but this time she is accompanied by Logos and Ormi. The fight is rather easy, have Rikku attack and use items, Paine attack and use Power Break, and Yuna use attack or trigger happy.

The same techniques listed above can be used to take out ????. Focus on her first then steal from Logos and Ormi for a chance to gain some accessories. Logos's gun attacks quickly cause a lot of damage plus he will use potions to heal the party so focus on taking him out next. Ormi's shield attacks are heavier but slower so you will be able to get in more attacks as he prepares. Once he is alone, Chain attack to take him out quickly.

After Logos and Ormi have been defeated, ???? will reveal herself to be Leblanc and initiate yet another battle. This battle serves as the tutorial for dressphere changes. (these are done by pressing psx: L1. Have Yuna change into her songstress dressphere and then use Darkness Dance to cast blind on Leblanc. Leblanc's accuracy is now reduced and most her attacks will miss. Rikku and Paine can also now change their dresspheres, but it is not necessary. Have Rikku steal items and use Paine's Power Break. Chain attacks to do max damage.

After the battle is over, you will find yourself on the Airship Celsius.

Second Visit
Return to Luca during Chapter 1 before visiting the Zanarkand Ruins to complete a side mission explaining where Yuna was during her impersonators performance.

Moogle Mission
After arrival, you will be in control of Yuna wearing a Moogle costume. She will be on a side mission to hand out 10 balloons. She can sell them to every NPC in the plaza area except for a little girl running around and a man in green (there are some hidden Lucan's behind the glass window and at the back of the red carpet at the door to the cafe). After completing this task, you will be awarded the Healing Wind Garment Grid.

Learning Sphere Break
After the Moogle mission is completed, return again to Luca for more items and learn about Sphere Break. Upon arrival, descend the stairs and jump up and across to the pathway ledge for a chest containing Lunar Curtain x2. Head all the way down the stairs and then across the plaza. Follow the path to the left until you reach the stadium. Head up the stairs to the right locker room hallway. Here you will find Rin. Talk to him and he will explain how he created a popular game called Sphere Break. After speaking with him, head out back to the front of the Stadium, this time go to the left locker room hallway. Speak to the little man wearing a beak. Ask him to "Tell me the rules!". He will go through a tutorial of the game and then award you Helm Coin x5, Zurvan Coin x5, Coyote Coin x5, and Flan Coin x5. Head back to the airship when finished and continue on in the story.