Tomb Raider: Underworld

You must find 100 of the 179 treasures hidden throughout the game. Most of these appear in jars that you need to break with the (Y) button, but some are loose (mostly those underwater).

Here is a link to the list of locations that I used to acquire this achievment.

http://www.tombraiderchronicles.com/underworld/walkthrough/t...

***NOTE: They must all be found under the same game save. The best way to do it is follow this list as you work your way through. If you miss any of them, you can obtain them by using the Treasure Hunt mode after you complete the game.