Spotter is an achievement in the Mafia III DLC Stones Unturned.
Requirements[]
Killed 30 enemies using Sniper Support.
Walkthrough[]
If you're playing Stones Unturned on a completed game save, this achievement may be difficult to complete. It is best to use sniper support as often as possible during the DLC, and afterward you will have to drive around New Bordeaux and look for small groups of enemies that spawn at various locations. This will also unlock on police officers; however, you must be in either a blue or red police zone when performed.