1. Look at the sarcophagus with the symbols. From top to bottom it shows Bird, Foot, Swirl, Snake, and Feathers.
Change the symbols on the top so it's in the same order from left to right.
Press the blocks in this order:
5th, 5th, 1st, 1st, 5th, 5th.
2. If done correctly, the blocks will disappear.
Press the door to open it.