The tutorial shows you how to use the bow. Just hold shift and aim with the mouse. Click and hold the mouse button down to set an arrow, then release to shoot.
Not bad, I liked the meat bag's fluid movements. He must've been wearing skates or something.
If you don't want it to lag as much, set the quality on low and turn off the special effects.
For people saying it gets too hectic after level 10: USE your power-ups, that's what they're there for. Turrets, slow-mo, and the laser are at your disposal!
Slow at first, but it's not hard. Beat the game with 53032 pixels saved, no continues (second try). The blue (slow) ability helped me the most.
It's funny how people don't know how to beat the clear ones. That's what tutorials and instructions are for.
EMP mines count as getting hit, so steer clear of them.
Also, when you're invincible, there's a bar at the bottom center of the screen that shows you how much time you have left. Take a glance at it once or twice so you know when it'll run out.