So, I'm waiting for the new KR episode and in the meantime I'm practicing with Frontiers.
After Dusk Chateau, veteran 3* and no rain of fire (here the video: https://youtu.be/45gCNK5LbEY ) I finally complete Bonesburg without rain of fire.
Honestly it's very very hard.
Here the video:
https://youtu.be/t-rAdXMt27k
Enjoy