Great game very fun, only changes I could suggest from what I've seen would be the following:
stopping legs being seen through walls when crouched, tutorial to keybinds, firing range to practice weaponry and finally weapon repair % in HUD optionally.
For the hard badge, use Abstract, Radar, Right (or left) , Off - I got lucky with the number of purple powers and a well timed yellow madness giving me a 200x modifier, end points were over 10 million, you need 5, don't hit those reds and good luck!
This is the most in depth story i have ever read from any game, and on top of that the game itself if impressive! It kept me on the edge of my seat right until the end, I hope that we will see a sequel, or at least something as great as this game is. Thanks.
1. fun 2. gets too hard 3. too many enemies on screen so speed makes you get hit more, 4. bosses take too many hits, even with powerups- at least make it a hard badge -.-