"Escort train to town" is an objective in the quest Get Frosty in How Marcus Saved Mercenary Day DLC
Walkthrough[edit]
As the train heads toward Gingerton more Nippers will appear on the far side. They immediately start throwing their slush balls at the train. Just wait for the train to get over to Frost Bottom Station. Once there you will get your next objective. Do yourself a favor and slaughter all the remaining Nippers so you can do some work in peace.
