Great game but at the end instead of just leaving blank quests it should start filling in the blank slots with quests of other types.
For example i still have 8 quests to go and they are all 2 stars, this leads to a grind as i can only tackle one at a time instead of 3
enemy range is a bit lacking, u can just snipe them all
maybe slow down bullets to and increase range so it's constant action with a better chance of being able to dodge
FUN GAME :D
One thing i think will make it better:
unit targeting - because of the different abilities of the towers it is really frustrating when they don't do what's optimal especially if there are different enemy unit types on the map
smart targeting - the current targeting system is to target the unit closest to the data core storing location instead of targeting the one closest to stealing the core