How to get surveyor vaults in Arc Raiders
via polygon.com
Short excerpt below. Read at the original source.
You could have tens of hours in the game and not know what an Arc Raiderssurveyor vault is, because the enemy you need to kill to get your hands on one is one of the rarest in the game. Surveyors are large metal balls that patrol various maps, scanning the environment… but they’re not hostile. […]