I feel like I'm essentially soft locked at level 22. My units are too powerful to be destroyed, so I can't collect squares by sending out squares; but they're not powerful enough to destroy the right side of the map and switch ends before the left side of the enemies can destroy the base. So I can't get any squares at all; and I need squares to improve both attack damage (make my units kill faster) and to improve HP (make my base last longer)