A handful of toggle commands cover almost every "make me unstoppable" cheat in Fallout: New Vegas. Open the console with the tilde key ~ (see how to open the console), type one of these, and press Enter. Run the same command again to turn it back off.
God mode — tgm
Toggle God Mode. You take no damage, never run out of ammo, and carry unlimited weight.
Demigod mode — tdm
Toggle Demigod Mode. Like god mode for health (you can't die), but you still consume ammo and can be staggered. This is useful if full god mode feels too weightless.
No-clip — tcl
Toggle Collision. Walk through walls, floors and locked doors, and fly freely, which is perfect for escaping a spot you're stuck in.
Other essential toggles
- tmm 1 reveals all map markers.
- tdetect toggles AI detection so enemies ignore you.
- tcai toggles combat AI, so enemies stop fighting.
- killall kills every nearby hostile at once.
Browse the complete list of console commands for everything else, including item, perk and quest cheats.