Operation: Longsword | Walkthrough The Bureau Guide
Last update: 11 May 2016
When you land, go forward until you get to the soldiers bodies. Turn at them right and enter the park. You'll meet there three Outsiders, one Sectoid and leading Shield Commander. They shouldn't be challenging, especially that you'll find a Laser Pulse Rifle which deals huge damage for medium and long distance and has zoom, at the first wall. Using it is recommended, as you'll find a little of ammo packs while most of enemies use this rifle.
When the battle ends, go upstairs disarming mines. Up there you will fight three Silacoids and a single Outsider. Such a group shouldn't be a problem for you, so crush them. When they are dead, move on going through the next locations. Resupply ammo in a small army camp in front of you and then prepare for an encounter.
You'll see three Outsiders - when you eliminate them, on right you'll see more incoming enemies, including a powerful Tech Commander, two Drones, stationary Turrets, Outsider and a Muton. Order of elimination should be like the order of lettering them above. The most important is to eliminate Tech unit very quickly as he can repair machines and become quite problematic. Muton is the smallest threat in here, as his weapon can't cause any serious harm from down there (hide a squad behind a cover). Very effective may be Plasma Field of commandos: enemies are placed on a small area, so you can easily burn them.
When the battle is over, go through the fortifications on left, resupply ammo and go through the alien defending spots. Then, enter the long corridor and pick up a schematics of Kinetic Acceleration Pack, which increases damage dealt to enemies without shields.
When you enter the building, look for a Resupply Station and use it. Then, go through the gate and defeat a Shield Commander and two Sectoids (the best way is to lift the first one and fie down quickly). Then, go forward and prepare for an army of Sectoids and Silacoids, there will be a many of them. Enemies will try to drown you down with the same number of them, but don't get nervous: series from pulse rifle will stop the wave.
In case of need, you can use abilities like Fire Mission and Plasma Field like also useful Laser Turret.
When the battle ends, approach the big container in front of you and turn off the device. Then, go to the next room and kill immediately an Elite Sniper, who is on the opposite side of the room (Critical Strike plus two hits from sniper rifle should be enough for that). Then, eliminate two wandering Sectoids. When they are down, a huge Sectopod enters the battlefield.
At this stage of the game, this machine shouldn't be problematic: especially when you round it and use your abilities. When the moloch falls, two Drones appear, but they are nothing against you and your squad.
After this encounter go to the oppAxiste room and turn off alien factory. Doing so, you'll save hundreds of people and stop production of Silacoids.