2 bugs or imbalances
First I want to say it was a nice game.
Secondly the bugs: Whenever you want to continue your game it automatically resets all the upgrade points of your guns.It also doesn't allow you to continue buying if you have to buy something and basically my game ended before the gatling gun or more riflemans/engineers ~_~
Fix that and I'll give you 5/5 on score.Until then,suffice to say 8/10 is more than enough isn't it?