My 3rd Great Storm but my first successful attempt.
2 out of 6 of hidden chests was located on the inner most circle so was forced to move into inner circle with only 140 storm resistance against the 210 buff tower at #8. After collecting the last 2 hidden chests and with 195 storm resistance, move onto the final boss and killed it with 2 action points.
Below is the link to maybe the best guide for The Great Storm, Hero Wars
https://h-w.fun/en/the-great-storm-ma...
There is still much room for improvement from my 4th Great storm onwards ......