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The Sweeper is a combat drone used by the Last Bastion, armed with Golden Rocket multi-launchers that can only attack ground targets when deployed, during which it is also hidden to the enemies' sight, making it useful for ambushes.
Sweepers hide in the snows surrounding the Last Bastion's base, waiting for their targets to approach before firing a volley of "Golden Rockets" straight at them. Its turret has been specifically designed to allow it to fire the projectiles without revealing its position. However, a watchful commander will still be able to deduce where the missiles came from by carefully observing the battlefield. Even so, Sweepers make an excellent addition to the Last Bastion's defensive positions.
With a set of windspin engines of its own, it can cross water areas and then burrow in the ground and conceal its presence when ordered to the deploy. Naturally, the windspin engine will boost the unit's speed when near a Spinblade on the battlefield.
While the Sweeper is equipped with "Golden Rockets", its turret's design does not make it possible for this drone to target aircraft. For that you must rely on the Teratorn and other anti-aircraft weapons available in the arsenal of Foehn. Keep in mind that the Sweeper cannot fire on the move.
Other Foehn units equivalent in tier accessibility: