Infidel

Infidel (1983), an Egyptian adventure by Michael Berlyn, published by Infocom.

As described on the box:

INFIDEL finds you marooned by your followers in the heart of the deadly Egyptian Desert. A soldier of fortune by trade, you've come hither in search of a great lost pyramid and its untold riches. Now, alone, you must locate and gain entry to the tomb, decipher its hieroglyphics and unravel its mysteries one by one. Through the Antechamber, the Barge Room, the Chamber of Ra, death will lick at your heels as you race to the shattering climax of this match of wits between you and the most ingenious architects, builders and murderers of all time -- the ancient Egyptians.