Tomb Raider III | Remastered London level 3 Lud's Gate

A moderately complicated level. I missed several pickups but located all six secrets. Save progression when you get to the guard and frogman because secret six cannot be reached if the guard triggers the alarm before Lara makes it past undetected. I also ran out of harpoons and to dodge frogmen and a crocodile. I assume this is where I missed the bulk of the pickups. Though you definitely have to sacrifice 1 to get the secret in the sphinx area.