I guess it depends if you want the DLC one or the one for the disc version of the game, here is a link for the DLC one http://www.xpgamesaves.com/files/file/363-tomb-raider-legend-dlc-anniversary-complete-saveset/ i'm still trying to get one for the disc vesion myself.
This is as close as you are going to get and the saves are almost load and pop. You have to do the time trials legit, no way around it. I have tried a completed save and they still do not pop. http://www.xpgamesaves.com/files/file/4380-tomb-raider-legend-880-plus-dlc/
