In the Name of the Sphinx
Start this one by investigating the clue by the Sphinx's right paw.
Follow the trail to unearth a pressure plate, which opens the Sphinx.
There are three arches in the room, each with a sequence of five symbols. To solve this puzzle, you need to cross the tile floor by stepping on those symbols, in that order. Start with the symbols on the left arch.
When you run out of those, use the symbols on the middle arch, then the right arch. This will get you to the other side.
It also wakes up yet another mummy, who gifts you with a brick.