Ok, so I did the Abyss so we are on the same page. Got all the stars.
Yes, it is indeed a bit more difficult, especially since the Blessing isn't very good.
• Really no dodging the pyro thing, just shield-up and attack/iframe (sucks for those who dont have Zhongli)
• I used Fischl + Xinqui to destroy the Pyro boss. Zhongli was the main shield, but his E still does some damage. Diona was a shielbot and all of her Ults just miss...
• Precasting some setup damage so you don't waste time as it goes vulnerable
• Xinqui shield destroys Pyro sphere's crystals on touch
• Last attempt was with plenty of time left, but I found restarting instantly if the Cryo boss does the spinning wheel instead of the projects as a first attack. Cryo is super easy, but you have to nail it within a minute or something.
I brought (Geo bros + Eula combo) + (Klee, Fischl, Kazuha, Bennet) for the 12th floor. Typically I take Xiao and Klee as DPS, but if I bring Geo, I switch DPS to Eula + Blessing/ER tricks are useless for Xiao. It went alright, the first room is kind of the hardest. I panicked a little when 3 constructs spawned away from each other, but they redeploy into a cluster eventually.
I suppose our memes and shitposting about wishing on the scam banner might be an actual "correct" way to increase the power level instead of just getting more characters. One more Abyss damage-requirement increase and the only way to beat it will be with superior stats.
On one hand, I like that it is increasing in difficulty, but at the same time, it should extrend with more floors (and rewards).