I completed the game without dying. There is nothing wrong in any of the levels... In level 18 you have to carefully go halfway in the water and blow the bottom off and run back over away from the spikes.
Amleida, Check the little light above the chat box, if it is red you'll just have to load the game up again. If it is green and you still don't have the badge after a couple minutes the badge box (Yellow box with achievements) has a "Report missing achievement" button. Click on it and send a screen shot.
This game is dumb it says you can go on forever but the atoms that suck in everything reach 20 and you lose and there's nothing you can do to stop it and also if you get a combo of 5 or more about 50 of them pop up so 1/5
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