Climb out of the water, get the 2 sets of magnum clips (29-30) in the raised alcove if you missed them before, then climb up into the doorway in the corner.
Continue past the pharaoh statue room—remember it from the previous level?—to a sandy room. There's another mummy (16) below...
...which you can easily kill from the doorway.
Jump over to the sand-covered structure ahead. (In a minute you'll see that this is actually the back of the sphinx, with a room built around it.) Hop down on the left side to get a large medi pack (37). Climb the brown stone blocks in the northeast corner to a doorway. This leads back to the area by the sphinx.
The previously impassable slope is now a flight of steps. Descend and head for the small obelisk by the pool in the far left (northwest) corner of this area.
On the way, take a little detour to the room between the sphinx's paws to pick up an extra box of shotgun ammo (38). (No, you're not hallucinating. It wasn't there before. Maybe one of the mummies dropped it.)
Place the artifacts in their proper spots on the pillar in the middle of the pool...
...to open the level exit, on the far side of the sphinx.
DARK MODE: Even with brightness adjusted, dark images on a light background can be hard to see. May I suggest a reputable dark mode browser extension, such as Dark Reader? (Download only from trusted sites, like darkreader.org or your browser's web store.)
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