Last time I said Albedo will become this freaky-named beast thing that Fischl will apparently fight. And the book claims that it has a power level of 30 whatever that's supposed to mean.
But why?
I think at this point tons of people have talked about what Albedo is. The simplest explanation is he's a homunculus. Rhinedottir put him together like a piece of glassware. Slightly more in depth is the alchemy route where Albedo is named after the second stage of the Magnum Opus that's designed to create the Philosopher's Stone an alchemical Holy Grail that can transmogrify any metal into gold and silver.
Albedo means white and this stage is preceded by the black stage Nigredo. It is the black stage because in terms of alchemy to eventually complete the Magnum Opus you have to first burn away and rot away the physical material. I think it should be separate from Gnosticism but it ends up being the same idea: physical is bad. Once the material has rotted to pitch black this is when it's now broken down to its base form or prima materia and that's when albedo can start. Albedo is purification. Once the impure physical stuff is gone the spiritual light can shine through. Any Christians in the audience? Turn away now lol Back in the old days Lucifer was this light. After all he is the light bearer. 
So you've rotted away the human impurities of the physical world and now he can shine through and create true spiritual material.
Finally you need to distill this material. Lucifer brings the light but it's just light itself and you can't really do anything with it until you've properly interpreted it. By the way this is also the most vague step and for good reason: I don't think even the alchemists from back then knew what they were talking about lol
Anyway if you're successful (and nobody was) you'll reach rubedo
or red which is the philosopher's stone. But cut to Gnosticism and this is clearly meant to represent enlightenment. You've cleared away the impurities of the physical world and brought out the light. Then you looked into this light and found the truth. If that's not enlightenment I don't know what is. 
Side Note: If anybody was interested rubedo reads like this.
"O Turba of Philosophers and disciples, now hast thou spoken about making into white, but it yet remains to treat concerning the reddening! Know, all ye seekers after this Art, that unless ye whiten, ye cannot make red, because the two natures are nothing other than red and white. Whiten, therefore, the red, and redden the white!"
and
"Ascend above any height, descend further than any depth; receive all sensory impressions of the created: water, fire, dryness and wetness. Think that you are present everywhere: in the sea, on earth and in heaven; think that you were never born and that you are still in the embryonic state: young and old, dead and in the hereafter. Understand everything at the same time: time, place, things: quality and quantity."
and
"When rubedo has been realized the alchemist has accepted his spiritual inheritance. He has become what he always has been, but never knew he was."
Anybody need a Chongyun to help freeze your poor melting brains back into place? 
Ok but then why does that turn Albedo into a beast?
I skipped a step. In between Albedo and the prized Rubedo there's Citrinitas. It's that time again. Let's plug my big theory into the topic! 
Citrinitas means yellow. This step is sometimes seen as a mid-point between albedo and rubedo but other times it doesn't even get a mention. Again I'm pretty sure it's because once you've got light most people probably figured there's only really one way to interpret it. Thankfully we're Genshin players so with my theory at our side we know light doesn't necessarily have to be good. (made even more hilarious because of the whole Lucifer thing) In citrinitas you've gotten your light from albedo and in the cases where it's mentioned as a step, this albedo is a feminine reflection of light and now you delve deeper into it to reach the "better" masculine direct light. Then it's just again vaguely defined as interpreting this pure light to reach the truth of rubedo.
So what happens if you interpret it wrong? Gesamtkunstwerk. Albedo goes nuts. It might even be he turns into something that has the power of Celestia but still stuck in his homunculus body which is in no shape to contain that kind of power without actually understanding it. So we'll pretty much get this
And that's why once we've beaten him we'll either immediately come to the realization or it'll be a major turning point in the story that'll lead us to the realization of what the Genesis Pearl is. Either way it'll be important for us going into the fight against Dainsleif.
Does this qualify as maybe another Plan A? I'd say it's similar to the Tsaritsa. Both she and Rhinedottir are like these writings about the alchemy. Nobody really knows how to get to that enlightenment step because it's vague in just about every religion that brings it up. Because of that these two came up with ideas that just missed the mark and we end up needing to clean up their messes. But of course we do since just like Zhongli said we can't rush things. We need to find the things eroded by time and forgotten by the people and bring them back out into the light. Fixing these mistakes is another step on that road.
Tips and Tricks from a Super Casual Genshin f2p
