A good game, works the brain.
My issues with this game are the speed of the ball and your cursor. It's hard to tell where my cursor is because I'm staring at the stupid ball moving slowly into death's grip. It took a LOT of getting used to in order to work with the speed than against it. Of course, if it moved at speed with my cursor, it wouldn't be such a difficult game.
My other issue is the background for some levels. One of the 40-ish levels has a black and red checkerboard color... well the bullets are white and red. A bit hard keeping track when the red bullets basically blend in with the background! Would have made more sense to make red and blue bullets with non-red and non-blue backgrounds. Same with cursor color and background - hard to tell where the orb will go when it starts when I have to look around for my cursor first.
Also to note, the game kind of chugged when there were tons of bullets. Wasn't that much of a problem, since the orb moves slow enough anyway.
I found that the easiest way to navigate the bullets is to focus on one color than both. For instance, keep the orb red as much as possible, and only pay attention to the white bullets and change back and forth. Besides that, there's a pattern to the harder criss-cross patterns that took most of my time. Just watch the bullets and the waving action for a while before plunging into it.