I just beat it and I have to say it was one of the best games ever!! Here was my strategy. I got the golden gun, tank, chest bomb (Optional in my opinion), 21 nukes, and missile. First I hold down W and D and launch. I read in the comments below somewhere that it makes you go 1.4x faster. Then when I reach 750ft above space I use the missile which gets you up 100 ft. Then when I get out of outerspace (Above space) I use 1 bullet, then i wait for him to hit the ground twice and shoot again. I do that until im out of ammo and then I use nukes whenever I feel it necessary. You will probobly get some ammo which is always a plus. Using this strategy I went all the way to 4.5 million without using my chest bomb and then died at 4516463.7 ft. This game was well worth the time. Thumbs this up if you think it was helpful :D
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