I kind of want to try 4 Sigma's. They will simply shred swarms. You very well could take out 3 academy ties before one even gets the chance to shoot back. No need to keep them in formation, just incircle and pick apart your opponents formation.
They have more HPs than a 3 X build, and have way more firepower. Of course anything with a turret will give you issues...
Edited by Jo Jo