Did you get enough oxygen as a kid? I'm serious. How can someone be so stupid as to create a game where you drive a car that can flip over onto it's back just by driving it in fourth gear?
To win every mission, just fill the entire map with half marksmen towers and half magic towers. Upgrade a marksman tower to max and (after killing some enemies if need be) give it the wrath of the forest ability. You'll be able to gradually upgrade everything else from there.
Kongregate, please listen carefully. Games that use WASD controls need to be beta-tested better before you risk making your site look stupid by putting them on there.