After finishing the Civil War quest line in Skyrim I noticed that I had not gotten the War Hero achievement. This achievement can apparently be missed depending on the outcome of Season Unending. As I am playing on the PC, I was wondering if it would be possible to use a console command to force start the quest that trigger the achievement? Since I sided with the Stormcloaks, this would either be The Battle for Fort Sungard or The Battle for Fort Greenwall.
Achievements Unlocker mod can unlock all achievements or any achievements you choose with a little Creation Kit modification (Available through Steam -> Library -> Tools). You can also use Steam Achievement Manager to add or remove any Steam achievements. All in all, these options are likely much faster and less bug-prone than messing around with using console to trigger alternative missions.