Simple, maybe too simple
while it was different playing a continuous game of bat en ball while shooting things, it got too easy in the end, enough archers meant that anything that appeared on screen would die, so u only had to worry about the mages.
A little too simple, graphics were a bit dodge, and having no sound isnt a bad thing, having sound and no mute button is worse hehe.
Things for next time: Improve the graphics.
More magic upgrades, such as the ability to shoot fire catapults to a certain point with a 30 second countdown, slow down enemies etc.
Vary up the enemies, add fast movers and ranged attackers.
Overall, a simple game, yet pretty effective. 6/10