In the shadow of the pyramids

It's the year 1936. Near the Egyptian city of Tanis, amongst ancient ruins, destroyed by the ravages of time and nature, a Nazi military unit was unexpectedly spotted commencing archaeological work. The alarmed British intelligence concluded that the Nazis must have stumbled upon something extremely valuable, since they had entered a foreign country with such an unusual expeditionary force. But what could possibly lie in such an abandoned and cut off from civilization place... The British government has turned to you, a group of local scientists and archaeologists, to investigate the intentions of the Nazis. German forces cannot learn about your presence, so remember: your objective is solely to gather information and quickly relay it to command. According to the plan, you were supposed to meet with British agents, who had been hurriedly dispatched from Cairo, to jointly commence the operation. Unfortunately, a sandstorm prevented contact with them. The situation has become risky, but you decide to commence reconnaissance on your own, hoping that in the meantime the agents will join the mission.