Tomb of the Silversmith - Third Mirror Puzzle

Lara Croft and the Temple of Osiris screenshot
After you eliminate the scarab swarm, 2 Marks of Set appear, along with a glowing sphere, a square pressure pad, and a mirror that rises out of the floor when you step on the pad.

Lara Croft and the Temple of Osiris screenshot
First roll the sphere over to the left wall and use it to reach the red skull (2/5) hovering above.

Lara Croft and the Temple of Osiris screenshot
Then move the sphere onto the pressure pad to raise the mirror. Direct a beam of light from the Staff of Osiris through one of the Marks of Set toward the mirror so it is reflected through the second Mark, destroying both and opening the exit.

Lara Croft and the Temple of Osiris screenshot
In the 2-player co-op game there is no glowing sphere. So have Lara jump on the Egyptian character's shield to reach the red skull.

Lara Croft and the Temple of Osiris screenshot
Then have Lara stand on the pressure pad to raise the mirror while the other character uses the staff to destroy the Marks, just as in the single player game.

Lara Croft and the Temple of Osiris screenshot
In 4-player co-op there is no glowing sphere and instead there are 3 Marks of Set. As in 2-player, use one of the Egyptian characters' shields so another character can reach the red skull. Then have one of the archaeologists stand on the pressure pad to raise the mirror while the two Egyptians destroy the Marks. One can destroy the left and middle Mark using the mirror, as in the single player-game, while the other shines a beam at the Mark on the right.

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