I tried floor 10 node 7 at least 3,000 times i'm sure.  I came the closest and finally passed it with stats:     male   strength 2034   adjility 6758   intuition 2090  

     male Champion:  strength 2034   adjility 6758   intuition 2090  Vitality 0

Gear: bewolf's headband, right spellbound flail, enchanted trim, durable boots, celestrial ageis, and bewitched bestplate.

I finished three stars with 50.6 health.

Gear: bewolf's headband, rig4ht spellbound flail, enchanted trim, durable boots, celestrial ageis, and bewitched bestplate soulbane instead of spelbound flail and passed the floor with 81% health.  I couldn't believe it, so i did it 3 more times, and the lowest health was 71.8 when finished.  So i passed it 4 times in a row.

I then changed the champion to the female and changed stats to 1:2:1 ratio for strength, ajility and intuition, and passed it two more times with the same kind of stats.  So it doesn't matter what equipment you have, if you can afford soulbane it it well worth the 2 million runic coins.

 As you proved it an be completed  without,why did you botther to buy Soulbane and waste 2 million runic coins,when you already completed the challenge?

Perhaps you work for them.

Yes thanks. I understand curiosity,I was curious too.

You could easily be right, and though I haven't replayed the actual game much, I still collect the free materials from the store.

If you want the art of war achievement, do auto mode on floor 9 and 10, all nodes daily if you can, it will give you your 500% boosts as well as the 3250 boost.  You will need to use multiples of those to get this achievement.  As well i do it daily if i can, depending on the number of marks of resolve.  So i'm glad i don't have to watch those battles anymore, i'm sure i was dreaming frost excutioners i had done it so many times....