Reinforce one Sub Weapon.

Change your trousers and jacket.

Prevent any NPC from reaching maximum fear level in a playthrough.

Find all tape recording save points.

Administer a Thing test.

Restore power at Norwegian camp.

Find the UFO.

Clear "The Mountain" level without collecting food

Unlock all trophies.

Clear "The Great North"

Clear "The Underground Galleries"

Clear "The Edifice"

Clear "The Entry Bridge to Lutetia"