In Tomb Raider, what happens if you get 100% completion?

[ambam]

The the latest Tomb Raider game, what happens when you finish the game with a 100% completion?

Does it unlock anything?

 

[pyr0_m4n]

You finished it. There's no secret ending or anything like that.

 

[bystander]

I believe you may get an achievement. That's all that I recall.