Hint:for the final boss make him lvl 3 for size than keep freezing him until he crashes in your circle u wont take damage thats how i beat him on hard because he doesn't count as a boss untill u see his health. Again freeze him untill he crashes into ur circle and upgrade ur defult weapon! 5/5
 "Trollface Launch"){kind=icon}
 "Bullet Chaos"){kind=icon}
 "Effing Meteors"){kind=icon}