actually it is possible, but requires alot of practive, I was able to do it with 40 lives at the end, but on diffrent site, hoping to be able to get it first try on here now :P
Great Game :D
In order to beat the Epic boss level 1, you have to bomb the boss after it has passed your main defense, Use level 4 gems, they take out about 1k hp out of it ^^
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 "Bloons Tower Defense"){kind=icon}
 "GemCraft"){kind=icon}