Perform the required action to unlock the wanted Concept Art.
Which can be veiwed in the Extras menu.
|Unlockable||How to unlock|
|Creature Concepts||Get all of the treasures|
|Game Flow Storyboards||Beat the game while playing the difficulty setting "Master Survivalist"|
|Lara Concepts||Father all of the six relics|
|Zip and Winston Concepts||Finish the Prologue|
|Environmental Concept Art for Arctic Sea and Amelia Concepts||Finish Arctic Sea|
|Environmental Concept Art for Coastal Thailand and Alister Concepts||Finish Coastal Thailand|
|Environment Concept Art for Croft Manor and Doppelganger Concepts||Finish Croft Manor|
|Environment Concept Art for Med Sea and Amanda Concepts||Finish Mediterranean Sea|
|Environment Concept Art for Mexico and All Men Concepts||Finish Southern Mexico|
|Environment Concept Art for Ship and Natla Concepts||Finish Andaman Sea|
|Environment Concept Art for Jan Mayen Island and Gear and Artifacts Concepts||Finish Jan Mayen Island|