To enter the third-floor armoury in the Processing Facility, you need to explore a lot of area. The armoury cannot be opened because it requires security key cards that are scattered around the areas. Once you collect the required key card and reach the location, you can unlock the armoury door and complete the objective inside. In this guide, we will show you how to infiltrate the third-floor armoury during the Processing in Marathon.
How to Infiltrate the Third Floor Armoury in the Processing
The armoury is located on the west side of the Processing Facility on the third floor. Before you can enter the armoury, collect three security key cards:
- 2 Yellow Key Cards
- 1 Green Key Card
You will insert all three cards into the armoury access machine to unlock the door. When exploring the Processing Facility, look for loot boxes and machines that can have the key cards.
Some machines in the Processing Facility will give you the Yellow card. Green cards are found by looting around the building. Check the Cafeteria in the Dormitories to find the key cards. If someone has already collected or used the Keycard, then the keys will no longer appear on the map, and you will not be able to use them.
When exploring the area, you will find some locked doors that use the same keycard. Do not use your keycard on this door, as then the card will be removed from your inventory and you will have to find another keycard to open the armoury.
How to Open the Armoury
When you have two Yellow cards and one Green card, go to the west side of the Processing Facility. There you will find the armoury door with a card access machine. Insert the card into the machine, and after some time, the door will unlock.
When you enter the armoury, there will be a sentry gun which can deal a lot of damage. To finish the task inside the armoury, scan all the documents in the room and use the computer located at the back to complete the objective.
