Arras:Fortress

The  is one of the current Tank upgrades that may upgrade from the  at level 45. The Fortress may no longer upgrade as it is the end of its upgrade line. The upgrade key for this tank is.

Design
The Fortress has a circular base with 3 inverted Spawners (same as those of a Cruiser) and 3 Launchers (same as those of a ). Each Spawner is 120 degrees from the other, and the same applies with the 3 Launchers.

Technical
The Fortress's three Launchers shoot the same size Traps as the Trapper. Its three inverted Spawners shoot the same Drones as that of the Cruiser.