Board Thread:Questions and Answers/@comment-24596086-20150311105638/@comment-25828727-20150317170941

For the higher floors your daemons have to be slightly stronger, so I wouldn't advise using 4 Susumu Yamazaki unless they have higher stats. It is advisable to have better daemons the farther you go up the tower. I have never used this method either, to tell the truth, but I have heard people say it is effective.