To get the hard badge, only upgrade on lvls 10,20,30,40,50. Dont buy the sticky shield until lvl 30. Buy the interest bonus until 41% then buy the bottom 4 bonus items in the order Antimatter shield, Heat seekers, Inferno, EMP. The shield is the most useful bonus and the heat seekers make the final boss a breeze. + up if you found this helpful
If you are having trouble with the hard badge, but the antimatter shield and just hold it down for every level, they cant hurt you and it never runs out so you just have to wait 2:30 for each level
GLITCH: To get all badges click skip for the entire first battle and let him kill you, then click world map and go to the last area and u auto win. + if you like free badges
Is that something good or something bad? :X