Arc Raiders Stable Housing Mission Guide - U4GM Running Stable Housing in Arc Raiders? Check the third-floor safe room, try the fourth-floor Access Card printer, then head back and use code 2746 to grab the Project Heartwood Blueprints. If your loadout needs a boost, shop Arc Raiders items at U4GM: https://www.u4gm.com/arc-raiders/items Gear up, stay sharp, and make that extraction count.