A Shadow Over Egypt

Tier 1

Objective: Go to the Temple of the Sun God

Head for the location marked on the map to advance the mission.

Objective: Clear the temple courtyard of cultists

Simply kill 12 cultists in the area around the temple. Don’t aggro too many of them at once if you’re not overgeared

Tier 2

Objective: Find a way into the temple

Now things are getting slightly more complicated. You will have to take out four specific Atenists to get through the barrier. These are called Fire Keeper, Wind Keeper, Earth Keeper and Water Keeper. Whenever you kill one of them, you will gain a specific buff needed to cross the barrier blocking the entrance to the cellar level. They are located at the locations marked with coloured points in the map in the image below:

Each buff will last for 20 minutes, so there’s no time pressure. Once you have all the four buffs, step through the barrier covering the entrance on the lowest level:

Tier 3

Objective: Defeat the Elemental Guardian

Before engaging the boss, make sure to pick up the lore entry to the right of the entrance. It is also recommended that you take out the two Locusts on the left and right sides of the room before engaging the boss.

As for the fight itself, it will spawn adds with extremely low health. They will attempt to deploy AoE attacks on the ground. The boss will also often place toxic waste on the ground, which you should avoid.

Objective: Proceed to the ritual chamber upstairs

Run up the stairs to the chamber in which Arbeh is standing.

Tier 4

Objective: Defeat Arbeh

Now, the final fight. Arbeh is invincible with the force field provided by the worshippers. Use the mission item you got when you started the mission, on Arbeh, to gradually take down his force field. Every time you use the artifact, one of the worshippers will turn into a Locust and attack you. Do this four times.

Once all the worshippers are down, Arbeh will come for you and attack you directly. It will also restore the force field periodically. When this happens, use the Artifact mission item again. Keep going like this until Arbeh dies. Be sure to avoid his ground AoE toxic attacks.