Green Keycard

The lowest tier of Keycards available in the game, combined with a fuse, the Green Keycard will grant you access to the green puzzle-rooms in Tier 1 monuments such as Ferry Terminal, Harbour and many more. These rooms will also provide you with a Blue Keycard, which will give you access to higher-tier blue rooms with better loot. The Green Keycard can be obtained by killing scientists or by finding it on the desk in certain monuments.