Heroes and cc troops will help out as well. Alternatively you may switch some wall breakers into a Valkyrie to kill enemy cc troops
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Scan around the base for possible hidden tesla spots. Determine whether it's easy to get to
deploy about 60% of the giants followed by separate waves of 2 wall breakers
deploy a few wizards in sorta fan shape behind your heroes.
deploy giants in groups of 2-3
repeat step 3-4 until nearly all giants and wizards are gone. Send the pekkas.
deploy all of the remaining troops
heal the giants while they're at low health/ around many splash defenses.
rage the troops when they gets to the middle
heal again when needed, most possibly on a pekka which is near to 2+ hidden teslas without supports.
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The troops should split, having all giants and some wizards and a pekka in the middle while having the other pekka and some wizards on the outside. This is a very efficient strategy which can easily get 3 stars for you and hope you like it!