Lv5

It took the God King millennia to unravel the Infinity Blade's secrets.
Now, his mission begins with first blood.
Avenge your father and defeat the Daeril that surround him.
Destroy Radriar, keeper of the Infinity Blade, Deathless lord of Lairoth. Only fifty stamina per failure.

Snow Globe Dragon Blanc (Max Lv)

CAUTION:

Floor 8 has 4 -pys that will spawn in random colors.

Looks like a Odin + Great Healer, bringing a poison person along for the ride should get through this dungeon without much problem, yes?

Was hoping to just Zealx2 or Metatronx2 through this dungeon like the first 4 levels, but that doesn't look like a great idea anymore.

Just beat with Odin/Ama team.

Odin (Max lvl, Max awoken)
Maleficient Zaerog (lvl 80, max awoken,+215, 99 of it on Rcv, not needed)
Zeus Olympios (max lvl)
Hera-Is (max lvl)
Satan, King of Hell (max lvl, max awoken, +160, 90 on Atk)
Dancing light Amaterasu (max lvl, max awoken, +99 rcv)

Zaerog could probably be subbed for another Zeus (preferably dark, those TPAs can make quick work of the demons). Fl1-4, 6-8 are the basic grind/skill up floors, used grav's when the pys showed up, kill all but one and charge skills. I got lucky on 5, & had a light demon, satan nuke OHKO'd him. If you don't get a light demon, 35% grav & nuke one of the two, grind/charge skills on remainder. Fl9, grav+nuke. Boss, use Ama+35%Grav, grind /charge to 51%, Zaerog+Zeus+Hera+nuke=win.

Overall, it was easier than I expected, had a few floors where masks/demons were synched, usually blast one demon with Odin or gravs for multiple masks. Luckily didn't run into more than one pys at a time.

Awoken Noah
Water Dominion Gabriel
Divine Warden, Umisachi & Yamasachi
Wood Dominion Michael
Iwato's Dancing Goddess, Amenouzume
Awoken Noah
All were max awoken. This was a build that when put together that gave me ~100,000 HP, ~5000 RCV, and 3000 in auto recovers. Basically you want to put together gods that have high recovery. While I died on the boss stage, I feel like this could be a successful team, given the right amount of skill ups (which I had none of) and levels (all of mine were around 30). I only had less than 25% of his health left.

Strategy for those of you who are going to try:
Floors 1-4: Gid rid of the fire and dark devils right away with two pronged attack, as they can bind Noah who only has 50% resistance. If you encounter masks or pys, don't be afraid of them, focus on the devils first.
Floor 5: Hopefully you have a bit of luck and won't get a fire or dark devil. If you do, it may be a bit difficult. Good luck, and remember you have Ame to clear binds. If you don't get those demons, just manage your HP correctly, there is a lot so it shouldn't be a problem. Two-pronged attack makes it much faster. If you have less than 50,000 HP left, use an archangel and Ame.
Floor 6-8: Similar to floors 1-4
Floor 9: Shouldn't be too difficult, she doesn't bind anyone. Be patient and try not to throw your phone at the wall in frustration is she recovers.
Floor 10: Okay, here we go. You've gotten this far, but can you finish strong? Use a Noah when he does the -99% blow. Then use an archangel and Ame. The first 50% isn't too difficult, he doesn't have an awful attack. Just be prepared in case he changes your heart orbs to water. After he turns to the second color, you're in for a tough ride. That 20,000 hit sure is hurtful! If your HP dips below 5000, use Noah, archangel, Ame, and cross your fingers. On average, 2 sets of 3 heart orbs with Ame can give you 20,000 HP? Anyways, throughout the battle, use skills as needed, two-prong to speed things up, and combo like crazy to increase heart orbs and your probability of surviving.

General Advice:
-Compared to devils, pys and masks are much less harmful
-Target the monsters that will bind Noah
-Two pronged attack will make your life much easier, it speeds things up
-Use an Archangel and Ame if your HP is less than 50,000
-Only use Noah on the boss stage and only if your HP is less than 5000

If you are going to give this a try, let me know how it goes. Good luck!

I beat this using a balanced leilan-attacker leilan-g/g alraune-awoken hera-ult echidna-ult dqxq... no max skill but all max awoken.. the only floor i got a problem is on floor 5 but the 14k+ hp is enough to survive and i needed to use menace to kill one then stall as long as possible to skill echidna. in floor 9 & 10 use menace then grav then use the remaining turn to kill. I had to use 1 stone because i did not use menace on lillith. The pre-empt by vampire i used alraune's skill just to be safe.. if the turns not enough, you can survive the hits and the binds are easy enough to ignore as they are not necessary for the 14x.. r/l leilan can be swapped by high atk light att, just used it for the 2 enhanced att and tpa...

The updated seems identical except Lv 9 is Viciousdragon Helheim instead of Lillith. Beat w a U&Y team.

US version got Nº 520 - Snow Globe Dragon Rouge. Don't get fooled =P