Once you've broken through the fortress walls, some players habbo taler on vehicles should take the time to destroy the workshops inside winter grasp Fortress. It counts towards the Achievement Industrial Warfare, which only counts if you're piloting the vehicle. It will also curb the defense's ability to produce siege vehicles, which will help your side a lot. If the main doors of winter grasp Keep are broken through, all efforts must be focused at getting into the room. Riding vehicles into the room is a good strategy because players cannot be targeted while inside a vehicle.