In cloud world area 6 if you jump in a specific area and hit a wall in a specific area your guy gets stuck inside a cloud and you cant get out its funny watching your guy just dangle there having no hope of getting down ahhhhhh good times!
Everybody the key solution to winning is to get 99s right on the border of greenland then sign a pact with them while trying to get the red guys. meanwhile the green guys will be getting the purple guys and if your lucky greenland will capture the purple guys then you can charge in with your 99s and kill greenland then the purple guys will only come back but if you didnt get the red guys no worry just send in a few tanks to each area then kill all the remaining enemys then you win!