Eh. Not that good.
It was ok I guess. Very repetitive, and not in a good way.Every level was the same, and the same tactics worked for every level. The enemy's tactics never demanded a different strategy, and the units sorta melded into one.
I found the best side. Soldiers. Their chain gunners are cheap and very powerful compared to any other unit. I found that out when their chain gunners dominated my side. They can defeat anything at all.