i am disappointed that you can't control your units better. At least you should make units weak/strong when fighting different units, because now there is no point using other units. i won the game using only Sturmtroopen. Pro tip: later i discovered you can win also by bombing enemy HQ twice with bomb strike ;)
The enemies sometimes are stuck on the edge of the screen and they never come, also few times i saw dead enemies remaing on the screen. You can still finish the stage, but it is a little bit anoying. Too bad you can not switch between characters, because i want to show this companions of mine how things are suppose to be done.