I was wondering whether it is possible to launch the singleplayer campaign for either BF3 or BF4 without the use of the browser. This is useful when:
- You don't have an internet connection at that moment
- Battlelog is down.
I'll post my comment as an answer, just in case.
If you set Origin to "Offline" and click on the Battlefield 3/4 icon the game should just launch and give you the option of campaign missions.
I found this out by mistake once when my Origin was offline and it lauched straight into the campaign. I was mightily confused until I realised it was offline.