I replayed the game a second time. Retained ALL locations in ALL levels. Got quite a lot of secrets. Now you can replay ANY moment in the game.
I want to add from myself that it is unlikely that you will soon find such detailed saves for this game.
Tomb Raider Underworld: Save Game (100%, saved ALL levels, ALL locations) Free Download
It is not easy to go through everything without forgetting to save in any location (they change almost imperceptibly)…
Saves with full ammunition – I only used pistols.
