All levels of the trilogy are available to play.
Start at the beginning of the level, end and middle.
Everything is collected.

Installation:

C:\Users\USERNAME\AppData\Roaming\TRX\1234567890\savegame.dat

Just replace "USERNAME" with your actual username and "1234567890" with whatever numeric ID you see. This number is your Steam Community ID, so if you have multiple Tomb Raider I-III Remastered accounts, there may be multiple folders.

Author: Stanislav-T800