@ggkill:
lvl 10: let the ball swing all the way to the left before cutting the rope.
lvl 16: release 4 yellow and a brown. When all settles, drop the bridge. Let the last brown go.
As for people that can't beat the first level: hold off the enemy with your arrows, and keep bosting your mana pool (do this 6~8 times) and then just spam squires. Each unit has its own (progressivly longer) cooldown... the button turns blue again when you can click it. Squires, at least, are super fast to produce, and you can easily swarm the enemy this way for the first several levels.
As for the game... it does get quite repetitious, and it does need an autofire... A good graphic improvement on the first, but having to start over with upgrades each level is a horrible strategy for protracting the length of the game. The game mechanics feel like they would lend themselves much better to shorter bouts, or at least shorter/longer battlefields with obstacles, walls, defensive positions, etc. to mix it up.
@BeRzErKeR, christiger; while the concept of elves (faeries) and monsters is quite old, Tolkien actually invented "orks" when he wrote LotR, and the typically tall, pointy-eared elves we see today are his doing too.
 "Color Infection"){kind=icon}
 "Epic War 2"){kind=icon}