Ok go to pratice, get the minigun (the 5 on the num pad), make is so they arnt smart, then sit in a corner and hold down space and let the slaughter begin. + so everyone can see this
Ok here is a winning strategy for the last level:fill up the turret spaces with ion cannons then wait for the enemies to come, they will blow them up then save up for a super soldier dude and a war maching. Make the war machine first then the super soldier behind. do this twice and you will win. + this if it works