Tomb Raider (VI): The Angel of Darkness

Steam:  \steamapps\common\Tomb Raider (VI) The Angel of Darkness\SaveGame

Windows 7: Program Files (x86)\Eidos Interactive\TRAOD\SaveGame

Windows 10: C:\Users\your username\AppData\Local\VirtualStore\Program Files (x86)\Eidos\Tomb Raider - The Angel Of Darkness