User blog comment:Kuras/Fall Event 2016/@comment-28417650-20161125115750/@comment-25289497-20161126200941

Congratulations on clearing E-4! ^_^

E-4 was a big pain in the A indeed.. :/ Glad you've over that one. My E-5 guide should be up tomorrow since it takes quite a bit of preparation for the boss battle, which requires me to write more, heh. Anyway, expect E-4 to be a bit easier, but a much bigger resource drain. It may take more time to clear as well, again because of the preps (hidden starting point and/or weakening the boss). The actual boss battles are not too hard if you have Nagato, Eugen, Sakawa. Reaching the boss may take a few attempts though. I have a 50% rate of reaching the boss with FCF.