Complete the indicated task to unlock the corresponding concept art at the "Extras" menu.

Environment Concept Art for Arctic Sea and Amelia Concepts: Complete Arctic Sea.
Environment Concept Art for Coastal Thailand and Alister Concepts: Complete Coastal Thailand.
Environment Concept Art for Croft Manor and Doppelganger Concepts: Complete Croft Manor.
Environment Concept Art for Med Sea and Amanda Concepts: Complete Mediterranean Sea.
Environment Concept Art for Mexico and All Men Concepts: Complete Southern Mexico.
Environment Concept Art for Ship and Natla Concepts: Complete Andaman Sea.
Environment Concept Art for Jan Mayen Island and Gear and Artifacts Concepts: Complete Jan Mayen Island.
Creature Concepts: Collect all treasures.
Game Flow Storyboards: Complete the game under the Master Survivalist difficulty setting.
Lara Concepts: Collect all six relics.
Zip and Winston Concepts: Complete the Prologue.