Your mission. To infiltrate the enemy mansion and gather intel of the next terror attack plot for the US. The mansion will be infiltrated from the ground under. The sewer line from the maintenance to the spillage of the mansion. After a successful entry to the sewers, now will be the tricky part. Look for the door connecting to the mansion and accomplish the mission. The tricky part of this mission is the door. It has many locks and puzzles to solve to get the door open. Clues are left in the side and is scattered across the sewers. Good luck on your mission.