On the map 'Hades Peak' on the flag 'Central Trench' you can be invisible when you enter the Western part of the bunker.
You have to prone in the corner on the right side.
Other player will only see you, when they are in right spot with right angle to you, if they dont, they will only see your weapon and a magazin flying around.
When you do it and look up, your arms and weapon dont move but the camera does.
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