Dismember 25 Necromorph Limbs (single player only)

Complete Chapter 10: "Secrets and Salvation"

Defeat the giant necromorph on the hull of the Ishimura

Collect all weapons, text logs and audio logs on Chapter 8: "In The Hearts of Men"

Complete Chapter 7: "Life and Death"

Collect every weapon on one profile

Defeat the giant necromorph in the water tunnels

Collect all weapons, text logs and audio logs on Chapter 5: "Emergency Care"

Admire the view in the crashed shuttle

Earn 10 stars on one profile

Complete Chapter 3: "Return to the Megavents"

Complete Chapter 2: "Another Day at the Office"

Complete Chapter 1: "Worlds Apart"