Possible bug? Turret no5 and no6 cause considerably less damage than all the others when maxed even though their stats are the same. While other towers cut through enemies like knife through butter, these two do almost nothing, and are constantly overwhelmed.
Laser turrets should't turn around. They can farm almost nothing off the screen. They should have a limited turning arc unless manually targeting. This way they would (more or less) always face the lines of enemies and make more diamonds while idling.
Thanks for the feedback. We'll make adjustments soon.