Defeated the Rakk Hive, the Vault Boss, Sledge, Krom, or Flynt in a co-op game

Discovered Headstone Mine

Complete all Normal difficulty Whack-a-Box challenges.

Defeat a summon in battle.

Killed 25 enemies with incendiary weapons

Killed an enemy with the Siren's action skill

Max out the soul counter.

Transform a scythe to the maximum level.

Finish the strike narrative quest.

Chapter 10 - Shoot down 10 mines

Bypass the delta-level security lock in Mako Reactor 5.

Chapter 9 - Destroy 10 Kaos Bust Statues

Obtain the Chocobo & Moogle materia.