With this new level opening up, it makes sense to start a discussion thread on strategies to beat it. So to kick it off, I am posting a couple of approaches used by Dmitriy Rebrov, a member of the Crazy Kings FB Group.
I do not have more details than the photos I'm posting. As and when there is more from him, I will edit this post.
Approach 1
Approach 2
It is believed that the cards that he has used are either maximum levelled or very close to maximum level.
+++ EDIT +++
All the towers are at max level apart from Sniper which is level 6.