I have all of the gong except the last piece with the elder. I have made about five different totums, cleared the mosaic, but still no gong piece. What am I doing wrong?

try the strategy guides. They give lots of helpful hints.

Where are strategy guides?

I sent you a private messaage.

I have the same problem too. What can i do to get the last piece of the gong?

If anyone else bought the game from Reflexive and has this problem, please see this answer in our Support FAQ.