You can grant any perk without meeting its level, SPECIAL, or skill requirements using the player.addperk command and the perk's base ID.
The command
Open the console with ~ (how to open the console), then run player.addperk <perk id>:
That grants Strong Back (extra carry weight). Swap in any ID from the perk IDs list— each perk's page shows its base ID and a ready-to-copy command.
Removing a perk
Added the wrong one? Remove it with player.removeperk and the same ID:
Notes
- Adding a perk by console does not use up a perk point, so you can stack as many as you like.
- Perks with ranks (e.g. Intense Training) can be added multiple times; run the command once per rank.
- Traits and companion perks are added the same way — they're all on the perk list.