So much potential!!
So much potential but (sorry) bad done. Overall i loved the gameplay but
-there could be more units
-you should be able to choose by yourself how much of your killbots or tanks are in the squads
-the menu looked very bad
-no in-game instructions
-the map looked bad too.
I would do it like this :
You start with only 1 hero (unit like tank but you can upgrade it individually) and a few killbots. The map should be something like a caste(or so) and you have to attack(or defend) it. You should be able to choose which unit is in which squad and you should be able to control up to 5 squads but not with the spacebar - with the numers on your keyboard. Maybe add some music and make the menu look good. I'm sure like this this game would get a great score.
Hope you make a 2nd game like this