I hated this floor cuz i had to use my electro party for 1st half, which half of the mobs are immune to electro as well...so I have to do it twice just cuz of that. Once to get the 3* for 1st 2 chambers and then 2nd time to get 3* on last chamber.
I had to do it twice on floor 12 too this time. Overall this abyss was more annoying because I had to do it twice.