shinjo the reason it gives you 9999999 is probably because you had a memory editor running, and maybe werent even trying to hack. Anyhoo i got impossible badge WITHOUT cheating, check my page...
TOTALLY has all the concepts for badge hard=all accomplishments medium=game completed and easy=one accomplishment except game complete finished i.e. 10 curry mints found
First level is obvious. After the first, buy one soda can. After the second, buy as many soda cans as possible. After you max soda cans, buy skis. After you max skis, buy Freaky. After you max all 3, buy gunpowder, then buy the modifications. You should be able to buy all the upgrades at the 5th level and beyond (sooner if you do well). Aim for 45 degrees, and use all your soda cans right away. Then use your skis, followed by Freaky. Easy to get 7,000.
 "Platform Racing"){kind=icon}
 "Insurgo"){kind=icon}
 "Linkaball"){kind=icon}
 "N3wton"){kind=icon}
 "Agnry Faic 2"){kind=icon}
 "Grid16"){kind=icon}
 "TwoThree"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 2"){kind=icon}
 "MindScape"){kind=icon}
 "Tarnation"){kind=icon}
 "Ultra Avoiding TURBO"){kind=icon}
 "Timebot v1.1"){kind=icon}
 "Icescape"){kind=icon}
 "Bobs Revenge"){kind=icon}
 "Areas"){kind=icon}
 "Monsters' Den"){kind=icon}
 "Micro Olympics"){kind=icon}
 "Kongregate Pong"){kind=icon}