Taught your pawn a specialization.

Purchased a dwelling of your own.

Attended a palace masquerade in formal raiment.

Changed your vocation.

Went camping.

Escaped the bonds of slavery.

Complete Chapter 6.

Win the Queen's Blood tournament held on board the Shinra-8.

Recruit all Midgar 7th Infantry units for the parade in Junon.

Complete Chapter 3.

Defeat a summon in battle and obtain its materia.

Max out a weapon ability's proficiency.