Stronghold

 is a Tier 4 Tank that upgrades from Twin Trapper and Swarming Trapper at level 45.

Design
The has identical front barrels to the Twin Trapper, but each Trapper barrel gains a swarm gun over it, similar to the one that Swarming Trapper has. The swarm guns are wider apart than Cruiser and appear a bit longer, but do not extend past the tip of the Trapper barrel.