It's a pretty good game, I've really enjoyed it, but the difficulty is a bit much. I also tend to resort to 'cheating' the game, instead of playing in close range. The sentry towers, when under attack by 6 or so really make it close to impossible to easily win. Perhaps I simply have to play more to become better at it, but it's really difficult for beginners at the moment.

Graphics are nice, even without bloom and so on, good job!

Cheers