Hello, fellow Travelers! This time we’ll look at Floors 11 and 12 of Spiral Abyss that were changed with 3.5 update.
In this post I will mostly just repeat everything I show in my video Breakdown. There are certain limitations with local editor (including 20 pics limit), so I'd suggest you to watch the video, but feel free to stick to the format you prefer.

Instead of telling you what you should use, I focus on what can cause problems or give you advantage, so you could adjust your teams and strategy to get better results with what you have.

General Abyss tips

• Fight as many enemies at once as possible. Most of attacks in Genshin have AoE (Area of Effect) - it’s free damage.
• Protect yourself! Have reliable ways for each team to survive.
• You don’t have to always make teams around Blessing or Floor buffs.
• If you struggle to clear the entire floor, focus on one chamber at a time.
• Benedictions (cards) change with daily reset. Just try your luck next day if you need better buffs.

Floor 11

Floor 11 now increases your Pyro damage and good thing about this buff is that it works for Melt and reverse Vaporize teams, because these reactions amplify your total damage after all buffs.

Chamber 1

First chamber includes Kairagi duo followed by Consecrated Beasts duo we’ve seen in the previous version.
Floor 11, Chamber 1, First half - Enemies

Note: RES (Resistance) values' colors match corresponding elements (white for Physical, red for ALL). For reference, the most common value is 10% ALL RES.

As usual, the main time save against Kairagi is killing them both at the same time. Otherwise, when you kill one of them, the other one restores HP and buffs himself becoming immune to control. Just distribute your damage equally between them and use heavy hitting attacks as a finishing blow. Freeze can also win you an additional second or two.
Kairagi heals and buffs himself after you kill the other one
As for beasts, they are not on Floor 12 anymore, so they are less bulky this time, but still hit very hard and are extremely difficult to stagger. If you want to learn more about them, I explained how they work in details in the beginning of my previous breakdown. Mainly, they have high RES, especially to their own elements, until you stun them by breaking the crystal they summon. Just make sure you have reliable elemental attacks to do so. In order to survive this part, you can rely on shields, healing, Freeze or just stick to ranged combat with taunts.
And one more tip. Scorpion often stays in place casting AoEs around itself. You can simply leave it and focus on Vulture during this. If you struggle with them, just play it safe.
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In second half we start with Freeze combo from Eremites.
Floor 11, Chamber 1, Second half - Enemies
The easiest way to fight them is to simply freeze them back. You can also rely on abilities that apply other elements to you such as Bursts of Bennet and Jean to prevent freezing.
Then we’ll have to deal with three Hydro mages. Dendro and Cryo make short work of their shields. Just rush to the one with an aura. Others will teleport to you shortly after. And remember that your damage doesn’t matter against shields. Only elemental application does. It will be important later as well.
Floor 11, Chamber 1 - Summary: First and Second halves

First half – Better: Shields, Healing, Freeze, Ranged combat / Worse: Pyro, Electro Second half – Better: Freeze, Dispel, Dendro, Cryo

Chamber 2

Chamber two starts with another Freeze team. This time from Fatui. They come in two waves.
Floor 11, Chamber 2, First half - Enemies
All human enemies have reduced Physical RES, so Physical damage will be slightly better here. If you can’t quickly kill the Skirmishers, make sure to bring counter to their shields. Their shields are unique and can be countered with only a single element taking almost no damage from others.

• Pyro counters Cryo shield
• Cryo counters Electro shield
• Electro counters Hydro shield
• Hydro counters Pyro shield
• Blunt DMG (Claymores, Plunging Attacks, explosions - whatever works for breaking ores) counters Geo shield

But they shouldn’t pose much of a threat with enough crowd control and AoE damage.
As for girls, remember that Mirror Maiden has increased Hydro RES and Cryo Cicin Mages can protect themselves with a Cryo shield. It’s durability scales with the number of alive Cicins they summon, but Cicins die easily, so AoE damage will help you here as well.
The easiest way to fight them is to deal with Cicin Mages first dodging Mirror Maiden’s attacks in the process. She’s not that scary unless she hits you and gets into enhanced state.
Mirror Maiden's enhanced state details
In second half we have every type of Hydro mimics except for Raptors – the flying ones.
If you want to learn more, I explained their features and weaknesses in details in my guide for Oceanid.
Pyro, Cryo, Geo and Electro will work great against them. Modified Hyperbloom or Burgeon teams with less or even no Hydro can also work well here. Mimics deal surprisingly high amount of damage, so make sure you are ready to tank it.
Floor 11, Chamber 2 - Summary: First and Second halves

First half – Better: AoEs, CC (Crowd Control), Blunt DMG, Physical DMG, Pyro, Electro / Worse: Hydro Second half – Better: Shields, Healing, Pyro, Cryo, Geo, Electro, Hyperbloom\, Burgeon* / Worse: Hydro*

Chamber 3

For the final chamber we have two bosses.
I have a video about Terrorshroom, where you can find more details. Here I’ll just remind you that it has increased Dendro RES and the best way to fight it is to stun it using Quicken. There are three enrage attacks it can use before falling and if it decides to go for a run, just restart the chamber and pray for better random if you want to save more time.
As for Hydro Cube, Pyro will be your best bet here to deal damage, but adjusted Hyperbloom or Burgeon teams will also work. And Dendro is actually the best option when it comes to killing droplets.
Killing droplets with Dendro
Cryo is the second best, so make sure to bring one of those for easy finish.
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Floor 11, Chamber 3 - Summary: First and Second halves

First half – Better: Electro + Dendro / Worse: Dendro Second half – Better: Pyro, Dendro, Cryo, Hyperbloom\, Burgeon* / Worse: Hydro*

Here’s what we get in the end and the teams I used for this floor.
Floor 11 - Summary and my teams

Note: I specifically made their builds a bit worse than what I usually use and still had some time left in the end. I show build cards in the video for power level reference if you are interested, but they are mostly bad, so I won't post them here. Just know that my characters weren't OP :D

Floor 12

Floor 12 this time got much harder. And unfortunately, not because enemies here have complex mechanics. Enemy compositions actually got easier to deal with, but this time they just either have lots of HP or waste your time. Comparing to last rotation, you definitely need more damage if you aim for nine stars.

Chamber 1

In first chamber both halves work the same. First, you have to fight Eremite elite with a couple of bodyguards, then deal with Abyss Heralds.
Floor 12, Chamber 1 - Enemies
I explained how Eremite elites work in details in my previous breakdown – their own element is the best against them. And luckily, in both halves the same element is actually the best against respective Abyss Heralds’ shields. Freeze team is a good alternative for the second half if you don’t want to deal with constant freeze from Eremites. Cryo works great against Herald’s Hydro shield too.
In the beginning of each fight run behind the elite enemy before starting your setup. Guards slack sometimes, but this way they synchronize and stick together.
Synchronized Eremites
Cryo Herald can drain your stamina, but it’s hardly impactful. Hydro Heralds, on the other hand, are much more annoying, because they move around a lot and can increase cooldowns of your abilities. If you rely on those to apply elements, care to dodge these two attacks.
Attacks that increase your cooldowns
Otherwise, all of your active cooldowns will get six extra seconds if you get hit. And with two of these guys, it might slow you down significantly. Alternatively, you can protect yourself with a shield. Cooldown increase won’t activate if you don’t take damage.
Here are teams that I had success with.
Floor 12, Chamber 1 - Summary and my teams

First half – Better: Pyro Second half – Better: Shields, Dendro, Cryo

Chamber 2

Second chamber starts with Maguu Kenki and there’s really nothing we could exploit here.
Most of his attacks can be easily dodged with i-frames, so just bring your best team. And try to avoid using abilities with fixed AoE. Kenki periodically dashes away during the fight. Pushing him against the wall seems to reduce the chance of that, but it still happens sometimes and it might ruin your setups. And remember that even though you can’t deal damage in the beginning, you can still generate Energy. Same goes for his first big AoE cast.
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For the second half we have Black Serpents. They have increased Physical RES and RES to their respective elements, so in terms of damage Electro and Dendro will be the most reliable ones.
Floor 12, Chamber 2, Second half - Enemies
AoE Freeze teams are also good alternative for such annoying enemies. Black Serpents also heavily counter shields gaining strong buffs if they hit a shielded character, so don’t rely on them. Oh, and the new Geo guy protects his friends with a shield blocking all attacks from the front, but he’ll remove it if you just get behind him.
Enemies in the second wave start pretty far from each other. As soon as they spawn, run behind Anemo Knight. This usually forces the other two to come closer to you.
You can use something like this, for example.
Floor 12, Chamber 2 - Summary and my teams

First half – Worse: Static AoEs Second half – Better: Freeze, Electro, Dendro / Worse: Shields (and every other element)

Chamber 3

Last chamber starts with a single Ruin Guard with increased Physical RES followed by Cryo Lawachurl duo with increased Physical and Cryo RES.
Floor 12, Chamber 3, First half - Enemies
The best counter to Lawachurls is a team with a lot of Pyro application to break their shields really quick. Ideally you want to do this before they start raging, but if they do, either deal a lot of poise damage to stagger them or bring strong shield or good healing to survive it. You have to deal with them in about a minute, because in the second half we have the Sandworm...
It has increased overall RES, especially against Anemo and the only way to reduce it is to pop Windbite Bullets it summons with one of the elements you can Swirl (Pyro, Cryo, Hydro, Electro).
Setekh Wenut's RES - Abyss version is buffed!
Boss’ RES towards used elements will be reduced while it’s stunned. This is the best window to deal damage to it and Wenut summons Bullets approximately once a minute, that’s why you have to leave about two minutes if you want to use two of these openings. In Abyss it doesn’t use all of its attacks and there seem to be certain patterns of what moves it uses during the fight but otherwise it’s exactly the same, so check my full boss guide for more info.
Stick to teams that deal damage primarily with one of those four elements. Like mono elemental, Vaporize, Melt or Aggravate teams.
Characters that deal consistent damage or rely on short bursts will be able push some damage with each opening. You’ll get three or four of those each time before the big ones. Try to not rely on very long setups and make sure to start them in advance and ideally pop the bullets with the element you deal the most damage with during big opening. Also remember that even though Anemo characters won’t deal much damage here, they can reduce boss’ RES even further and significantly boost your damage.
Here are my teams for this chamber.
Floor 12, Chamber 3 - Summary and my teams

First half – Better: Pyro / Worse: Cryo, Physical Second half – Better: Pyro, Cryo, Hydro, Electro / Worse: Anemo

As for teams that could clear all of that in a single run, Pyro based team for the first half and Aggravate for the second have the best chances. But they have to be pretty good for that.
Floor 12 - Summary and my teams
Anyway, that’s all for now, fellow Travelers! I wish you good luck with your runs and a great rest of your day ^^
P.S.: If you have anything to add or point out something I could improve in the future, please, leave it in the comments below. Thank you!