I won with the 3rd age. Wheee......
Here's the trick. At the first stage just wait the enemy gets to the middle and use the volcano. then build a auto chicken or something which costs 200. Just let the game play until the riders come out. you should have around 400 gold then delay till you get the 2nd age. once you reach the second age, you cannot sit back anymore. spawn the archers. no, spam the whole game with archers. just send as much as you can. keep on doing this till you get age 3 where now you spawn with the rifleman. Don't worry about the canoneers as they come only later in the age. keep on spaming them and you should be able to win! Did this in Normal.
why is everyone posting the "noobs are overwhelming" chain message? why are they all corrupted by this strong compulsion to take a shortcut when they know it is but futile? guess only god knows.
He made this with shootorial. Crap. He seriously should have made it with something else. Just plain laughable. 3/5 for the effort of putting something one have learned into practice but -5/5 for the crapness. Too bad Kongregate only has the min rating of 1...