Very fun thank you! But some of the upgrades I wish I'd never bought (grenadier anything, heroic dash, fast start for endless). Also what about extra people being your reserve?
I don't know if anyone else has found this, but you can make any gun a machine gun by flipping between 1 and 2 and clicking, the weapon swap puts the reload at 0. The shot gun + oufit gets insane.
 "Battalion Commander"){kind=icon}
 "Gear of Defense 2"){kind=icon}