Quick answers
How do I upgrade walls in Rust?
Equip the hammer, look at the piece and hold Mouse 2 for the wheel; pick wood, stone, metal or armoured. You need the materials in your inventory and building privilege from a tool cupboard.
How do I open the map?
Press G on PC. The map shows explored terrain, your sleeping bags and team members if you are in a team.
How do I craft?
Press Q for the crafting menu, or Tab and use the crafting tab. Blueprints you have learned show in colour; a workbench nearby speeds up higher-tier items.
How do I lock a door?
Hold E on the door with a lock in your inventory and choose the lock, then hold E again to set a code or key. Tool cupboard authorisation does not open locked doors.
Is Rust Console Edition the same controls?
No. Console Edition simplifies building and crafting to D-pad menus; the table above lists its standard layout, but check its own in-game guide for context prompts.