Um I can try to help for lv 10, I know how annoying it is when you can't beat a level- I'm gonna use numbers to represent certain microbes:
1=Starting microbe, 2=Nearest microbe to 1, 3=Bottom right microbe, 4=Bottom microbe, 5=Biggest microbe (in the middle), 6=Left microbe
Use microbe 1 to take microbe 2 ASAP. You now own microbe 2. Support microbe 2 with microbe 1, and then use microbe 2 to take microbe 3. You'll have to fight the enemy microbe 4 to take microbe 3, but once you take microbe 3 it's easy to take 4. Focus on using all your microbes to attack microbe 5 (the big one). Make sure you don't lose microbe 5, because if you do, you basically lost the game. Since its 4 microbes vs 1, you should have taken microbe 5. Using microbe 5, it's easy to take microbe 6 and win the game.
Remember to always use microbe 1 to support the others.
I hope this has been useful, if you do it correctly it should take around a minute and a half. If not, try the official walk-through :)
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