Have something a bit like a wide angle flamethrower, but it doesn't do much damage, and applies effects to enemies.
It would be a weapon type with a tech tree.
For example, a kinetic spray cone would just push enemies away.
A cryogenic spray cone could freeze enemies and make them fall to the ground and shatter. Alternatively, it could just slow them down.
A plasma spray cone would heat enemies or set them on fire.
A bio spray cone could put biological enemies to sleep, perhaps also slowing down robotic enemies by growing terrain on them or something.
Also, if effects on the ground get implemented, it could apply effects to the ground as well.