Most good =D
Only problem I have is the background is blue, and enemies are white (mostly) and the targeting cursor is blue/white.
Maybe make it a color that sticks out a little more?
Either way, 4/5
For the hard badge: Before you defeat the monkey, but after you have everything, buy all the groupies, launch yourself, deploy your hang glider, do all the tricks, ending in a handstand hold. You should be able to fly around most of the bombs and bananas the monkey throws, and just try and land when you get hit too much/when you think you have enough.
Kinda annoying the very first thing I did was turn off the sounds and music, and yet some of them still occur anyway. Also, restarting my game because I went to the menu just to confirm that I had turned it all the way down before leaving this comment, only to find that when I "continue" I have restarted...
Pretty good game otherwise.
What are you trying to make me do on the Flipper level? maybe mention that somewhere, because doing a flip gets me nothing, and there is no way you can double flip...
When I loaded this game, it didn't have badges, and I was done playing after the first 5 levels or so. You'd think I'd have some incentive to continue now but...nope.
3/5
Upgrades > Different play modes.
And I also hadn't realized you can move until defence mode...Perhaps makes that a little more obvious? or maybe make it so you have to move before that mode lol. Not a bad game though. 3/5