Complete Claire's story on "Standard" or "Hardcore" with an S rank.

Defeat Stage 2 G using the crane only once.

Complete Leon's story.

Escape the police station.

Defeat Stage 4 G with 4+ minutes left until detonation.

Make it to the police station.

Complete Ada's segment.

Defeat an enemy with a knife.

Use Wooden Boards to board up a window.

Shoot the grenade you fed to an enemy.

Customize a weapon.

Counterattack with a sub-weapon.