Just run into them. They automatically high five you if that is a current challenge
I'm assuming you mean the iphone game. There is no actual best jetpack, however. The Rainbow jetpack does not make the scientists run away from you. The golden piggy pack doesn't hurt scientists but they still run away. All the rest hurt, and making scientists run away.
as of today no
collect 69 coins
There are only 16 levels, after that you start over from level 1.
There are about 20 levels on jet pack joyride. there are about 3-6 missions per level on levels 1-5. every level after that adds more. I hope this was better than the last answer :)
The ones on the bottom that goes left to right and is flat on the floor.
Temple run, Dead trigger, Angry birds, Fruit ninja, Words with friends, Jet pack joyride
Just hit cash in at the bottom right corner at the end of the game 3 times
personally i would say jet pack joyride,temple run, and zombie chasing ( zombie chasing is a zombie version of temple run.)
a helicopter or jet pack..
No you can not get a jet pack
You get it in the jet pack game on the beacon.