

The 4th upgrade options in Origins are the Bladesinger Hall and the Forest Keepers.The 4th upgrade options in Frontiers are the Assassins and the Templars.The 4th upgrade options in Kingdom Rush are the Holy Order and the Barbarian Hall.Barracks are especially good when combined with Reinforcements (see below) to stop the maximum amount of foes. They are capable of attacking ground and (depending on what your 4th upgrade option is) flying forces.

A player may control where the soldiers spawn by changing their rally point. Barracks are used to slow foes down by engaging them with soldiers while other towers pick them off.The 4th upgrade options in Origins are the Arcane Archers and the Golden Longbows.The 4th upgrade options in Frontiers are the Crossbow Fort and the Axethrowers.The 4th upgrade options in Kingdom Rush are the Rangers and the Musketeers.They are capable of attacking ground and flying forces.

