Level 4 is glitched. Either I get far enough to where there's nothing left and I'm stuck running around, or I get stuck with one enemy and can't kill it. Great game up until then (: 4/5
I used 14 nukes and all 10 shots and hit 3,161,643.7 ft. All you do is launch him diagonally, let him bounce until about 300,000 feet, use the rocket, shoot him when he's at about 400 feet high, and as soon as you shoot him, use a nuke. Only do this combination every 500,000 feet and you'll get it.