@Phys:
A great idea would be to make a vid of each BS stage, with a full team of archers, a mage and a bear.
That would give ppl an idea regarding the tactics both for the stage and the char they are playing with.
Assemble your team and off you go to recording on that pepsi can ;]

Back to topic:
1 very important skill to develop is aggro+pull with a bird.
Try to cover as much an area as possible with shatter scream in order to grab a massive combo. While moving, of course.