Anyone have better guides for Tianzhu for newbies?

Let George and Mash support the friend jalter.

Go for class advantage. Find a support Rider like Drake or Medb. Or you can go full Cu team with Cu Alter, though Medb might work more than Cu Alter.

Find a friend Cu Alter with high to max skills. He can help you brute force through the quest with a relatively low risk of dying.

If you have George, Mash or any other taunter, use them to buy more turns for Cu.