@HH: What units do you have available to use on it? Maybe we could help you with a strategy. I personally got 3* on the 2nd run, but I use some seriously OP units like Minerva, Sybilla and Nanaly.

Oh btw, for anyone having lots of issues with the golems...
They can be assassinated. For realsies. Minerva and Sybilla have both done it for me, so you can try gambling with Saki or Azami. AW Hina is a gamble too that is viable (skill is Increase Attack 4 and she has a 15% chance of ignoring Defense after AW). Even getting one assassinate is HUGELY helpful in making that map a heck of a lot simpler