fun, requires some tactics and a bit of luck. some levels easy first shot first time but others are maddening! as someone else said once you get the all gold upgrade you no longer need/want it. nice increase in number of levels for the pp
would help a lot with more guidance as to where you are supposed to go at times, but I was able to kill the last station. not much of an ending, but maybe a better ending in the sequel.
27 days - used ultimakewl's comment to help finish out. got all achievements in ramp order and wasn't really all that concerned about low days ^_^
Fun game, very similar to shopping cart hero, real happy this game saves! Other modes once you get to 6000 feet might add some replayability? How about a graph displaying the flight over time to better analyze and make improvements or just for fun.
 "Balloon in a Wasteland")
 "Record Tripping")
 "Bloons Tower Defense 4")
 "White Sudoku")
 "Einstein's Riddle")
 "Level Up!")
 "The Gun Game")
 "Take Something Literally")
 "Crush the Castle Players Pack")
 "Deep")
 "Toss the Turtle")
 "Warfare 1944")
 "Red Remover")
 "Stick Arena: Ballistick")
 "A Short Walk"){kind=icon}
 "Starcom")
 "Learn to Fly")