Method 1 is running away, not countering or handling it.
Method 2 is invalid since he isn't going to be able to see Hashirama when he is standing on top of a statue that is taller than Mountains, nor will he see him when a flurry of fists rains down to end his life.
Method 3 is the dumbest thing on here. An electric shock from Chidori won't block or stun the Buddha's fist nor does Kakashi have the chakra to make 20-30 clones and use Raikiri with every single clone.
Method 4? Lol. Shinsuusenju did
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in a matter of seconds. Hiding like a mole just gets him killed.