Beginning of Chapter 3!

Airship Celsius: + 0.8%
-Initial scenes.
-Rest in the Cabin.

Luca: + 0.8%
-Defeat three contestants then Shinra to win the Sphere Break Tournament

Mi'ihen Highroad: + 0.6%
-Mission Complete! (Defeat the malfunctioning machina attacking pedestrians on the Highroad.)

Mushroom Rock Road: + 0.4%
-Speak to Yaibal and Lucil near the barricade

Djose Temple: + 0.2%
-Approach the temple to trigger a scene with Gippal.

Moonflow: + 0.2%
-Speak to Tobli near the wagon to trigger a short scene.

Guadosalam: + 2.0%
-Inside the chateau, speak with Logos and Ormi in the living room.
-Speak with Leblanc in her upstairs bedroom.
-Speak to Logos and Ormi a second time, then proceed to Logos' room.
-Watch Ormi's and Logos' spheres.
-Talk to Maechen.
-Obtain "Crimson Sphere 4," then board the airship and watch "Crimson Report 4" at Shinra's station

Thunder Plains: + 0.2%
-Speak to Lian and Ayde in the northern part of the Thunder Plains. Choose any destination.

Macalania Woods: + 0.8%
-After paying off O'aka's debt, head to the Travel Agency at Lake Macalania and obtain a Mission Complete! (Defend the Travel Agency from fiend attacks)

Bikanel Desert: + 0.4%
-Speak to Marnela in the Cactuar Nation.

Calm Lands: + 0.4%
-Mission Complete! (Rescue the tourists trapped inside the cave)
-Visit the Travel Agency to ensure the installation of Shinra's CommSphere.
-Visit the upper floor of the Chocobo Ranch to ensure the installation of Shinra's CommSphere.

Mt.Gagazet: + 0.4%
-Mission Complete! (Defeat Garik Ronso at the mountain summit to stop the Ronso from waging war)

Zanarkand Ruins: + 0.2%
-Speak to Isaaru inside the Zanarkand dome.
-Complete "Operation Monkey!" mission before the end of Chapter 3.

Besaid Island: + 2.0%
-Mission Complete! (Clear the temple of fiends and defeat Valefor)

Kilika Island: + 1.0%
-Mission Complete! (Sneak through the port and the forest to Kilika Temple, then rescue Barthello and defeat Ifrit)

Airship Celsius: + 0.6%
-None .

Bevelle: + 1.6%
-Notice Gippal from the Highbridge.
-Witness a scene at the Bevelle Underground.
-Obtain Crimson Sphere 1, board the Celsius, and view Crimson Report 1 at Shinra's station.

Djose Temple: + 2.2%
-Mission Complete! (Defeat the fiends emanating from the temple and defeat Ixion)
-When Yuna mentions "I'm all alone..." in the Farplane Abyss, press the "X" button to hear a distant whistle. Keep pressing "X" until you hear the whistle four times

Game Completion: 59.6%

Chapter 3 Complete!