City of the Dead Just pass through the level.		Street Bazaar Mine Detonator Body and Mine Position Data. The other two pick-ups (Handle and Car-Jack Body will help you to finish the current level).		Trenches Third Time. Go to Street Bazaar again.
Chambers of Tulun Pass through it and find your way to Citadel Gate, by avoiding the Minotaur.		Trenches Second Time. Go to Street Bazaar (using the Roof Key).		Street Bazaar Second Time. Go to Trenches and enter from another way.
Citadel Gate Find the Nitrous Oxide Canister. Back to Chambers of Tulun.		Chambers of Tulun Fourth Time. Back to Trenches.		Trenches Fourth Time. Use the Mine Detonator in order to enter Citadel Gate from another way.
Chambers of Tulun Second Time. Make your way to Trenches.		City of the Dead Second Time. 2nd Secret.		Citadel Gate Pass the Dragon and go to Azizus.
Trenches Find the Weapon Code Key and Valve Pipe. Back again to Chambers of Tulun.		Chambers of Tulun Third Time. Find the Roof Key.		Citadel End of Cairo levels. Retrieval of Amulet.

The goal is to find the Amulet. During your raiding you will meet Sergeant Azizus, who will tell you that in order to enter Citadel you will need to destroy the Dragon that guards the entrance. You can do that only with the motorbike, so you need to find a way and approach Azizus with it. Your main target is to find this way and that's why you will hang around Cairo, finding items that will open your route.

The Cairo levels begin with the City of the Dead. Here you just need to find your way to the Chambers of Tulun. The Chambers of Tulun is linked to Citadel Gate and Trenches. You first need to go to Citadel Gate and get the Nitrous Oxide Canister. Then return back to Chambers of Tulun and go to Trenches. Here you need to find the Weapon Code Key and Valve Pipe. If you combine the Valve Pipe and the Nitrous Oxide Canister from Citadel Gate, you will get the Nitrous Oxide Feeder. This gives an extra boost to your motorbike and allow you to proceed to the next level (Street Bazaar).

According to CORE and in order to go to Street Bazaar, you need the Roof Key. This Key is located in the Chambers of Tulun level. The extra boost will help you to get it and it will also help you to get the Secret from the City of the Dead. So, you can either back-track to these levels and get the pick-ups or proceed without them (the Roof Key is not necessary in order to finish the Trenches level). With or without the key, you need to make your way to Street Bazaar.

In Street Bazaar, you have to find the Mine Detonator Body and Mine Position Data. The other two pick-ups (Handle and Car-Jack Body) will help you to exit Street Bazaar. This exit gets you back to Trenches, close to the area with the palm tree. You have nothing to do in Trenches, so go to Street Bazaar again. Since you do not have the motorbike, you have to go on foot. Once you enter Street Bazaar, you have to go to Trenches but from another way which takes you to another part of the level. In Trenches you have to use the Mine Detonator Body and Mine Position Data in order to access the Citadel Gate from another way (if you try to access the Citadel Gate through the Chambers of Tulun bypassing once again the Minotaur, you will not trigger the cut scene with Azizus). Once you enter the Citadel Gate, you have to pass the Dragon and go to Azisus. The next cut scene will get you to Citadel, the final level of Cairo.