You have to play the levels in order. You can only select to play a certain level if you've already completed it in the campaign, either solo, or with a friend.
Buy them. As you play beat more and more levels ypu unlock the planes then buy them.
if it is on the multipayer you need to have halo waypoint and a certain achievement. if not i dont know
go on stick page
levels of what?!
You unlock levels one at a time. You unlock the next one after you beat the previous one.
impossible. you have to do levels to unlock miis.
rank up
You go to Combat Training.
unlocking ninja
pass the game
unlock all levels zuma revenge
Get at least third in the levels you got.