The Bluecoats: North & South

If you are playing the minigame, it's a pretty straightforward shooter. Kill all of the enemies in the fort. The number of enemies in the fort is on the bottom left, your health is on the bottom, and your ammo is on the bottom right of the screen. The minimap shows where you are, the yellowish areas are doorways, and the red areas are enemies. You can also find more ammo around the map or on the enemies you kill. You can get more health around the map, usually inside buildings. If you have the minigame turned inactive, attack a fort with a large unit and get lucky with the slider that determines if you take the fort.