Ratthang, just splurging it

Yeah i dont even know why, but here's a vid of something im doing for a competition intended for webplayers, any solid advice on speeding things up appreciated, also if anyone knows a place i cann get math for 2d attack waves would b hugely appreciated, pretty old school stuff, generally involving the Mathf.Sin function a lot

http://www.youtube.com/watch?v=FJFK1WP7o6k