
Here's a video telling you where to find all the keycards in Rust. Rust Beginner's Guide - Where to find all Keycards All these cards have a swipe limit, however using them on the wrong door or one that is not powered will not deplete them, but using them on an already opened door will. To store electricity you must use a Small Rechargable Battery, a Medium Rechargable Battery or a Large Rechargable Battery. To create electricity you must use a Large Solar Panel, a Wind Turbine or a Small Generator. Electricity is measured in rWm (rustWatts minute). Red cards can only be found in crates and behind the locked blue doors. It's needed to power CCTV Cameras, Ceiling Lights, etc. Blue cards can be found in vending machines at the Outpost or in loot rooms opened by the green card that do not contain a blue door. Green cards can be found as a drop from scientists, and at the lighthouse, super market and Oxum's Gas Station. Note that there may be a blue door behind a green one for example, so make sure to have all you need before opening the first one, for the loot can be sparse before the last door in these cases. Each of these doors requires the respective coloured keycards to open The difficulty of the doors goes in order of green, blue, red, green being the easiest and red being the hardest. Not much is known about the loot yet although we do know it will respawn every 30 minutes and is different from monument to monument. Note that the fuse will deplete even if the switch is not activated. Hitting a tree with a rock will provide wood, hitting a rock with a rock will provide rock and ore. To do this the player should gather resources. Rust aims to create a hostile environment in which emergent gameplay can flourish.

Inspired by games like DayZ, Minecraft, and S.T.A.L.K.E.R. Next to the fuse box, there is usually (but not always) a switch you need to activate in order to deliver power. Rust is a survival game created by Facepunch Studios. You can tell that a door has power when the keypad is lit down. You need to deliver power to a locked door and then use the corresponding key for said door. These puzzles work off of a newly implemented electricity system.
