Upgrade any weapon to the next level

Kill Poseidon

Beat the game.

Run 42.195km.

Break 100 weapons picked up in battles.

Defeat Lau Ka Long in Chapter 8.

Complete Astral Academy

Defeat man in black suit in Chapter 5.

Have your first Revelation.

Defeat Rikiya in Chapter 2.

Acquire all Trophies

Obtain seven complete Angelic Hymn Gold LPs.

Complete Chapters 14 through the Epilogue on Hard difficulty.