Green Keycard

The Green Keycard is a game object required in order to access a some monument puzzles. It can be obtained by killing and looting scientists and can be found on desk in Abandoned Cabins, Abandoned Supermarket, Ferry Terminal, Junkyard, Lighthouse, Oxum's Gas Station, Underwater Lab and by completing Power Plant's monument puzzle. List of monuments that require Green Keycard to finish monument puzzle: Airfield, Harbors, Launch Site, Military Tunnels, Power Plant, Satellite Dish and Sewer Branch.