Rythian’s tattoos existence and insistence on finding the journal make clear that either as part of the plan or as a known side effect, DL Rythian would lose his memory. What is most striking about this to me is that *he couldn’t read them* (unless there is some big twist later on about him hiding how much he knows). 

If you are physically tattooing instructions on someone’s body so that regardless of what happens, they have access to them, you would obviously choose a language they know.

With Rythian nearly getting himself killed in chapter 2, you would think if pre-DL Rythian understood just how vulnerable he was going to be, that more precautions would be taken, and maybe they were but something went wrong. Maybe the egg wasn’t supposed to crash, maybe something went wrong when he received whatever power has led to the change in eye/hair color, maybe something else entirely. 

Again and again in Dawnlight we see that Rythian remembers basically none of the knowledge of his past life, only really maintaining some muscle memory and a strong sense of intuition (with his description of every feat of ‘knowledge’ being that ‘it felt right’). He felt that the darkstalkers are dangerous and shouldn’t be in the nether. It felt right that the flame he can produce would be able to light the portal, etc. If they knew that this was going to be the case, his tattoos wouldn't have been in a language he can't remember (they could have been in a more normal code that takes time to crack so only the person with the tattoos has access to the code for long enough to crack it or something).

Furthermore, the logs for the black box are scattered and potentially damaged. The homing on the blackbox makes sense, but either you trust that whoever has it is who is supposed to and you put the logs in one stash or you don't. Scattering them separately strikes me as unusual. It is possible that they were scattered in the crash, and in that case, how log 24 ended up in a cave is concerning for the safety of the main trio.

“Styx wash” and “up the Styx again” - both sentences feel like idioms (and therefore don’t immediately stick out to me as important on their own) but both of them using “styx” is really interesting both because the river Styx is obviously from real world mythology and because the repetition draws attention to this choice. Because of this, it is a strong candidate for an important mistranslation but without more information as to if it is possibly a name or a real location (or a reference that Rythian would understand with his memories like a code word) will stay unknown until we get more information. Also the phrase “Styx again” is really interesting and likely refers to something that happened between Blackrock and dawnlight (if dawnlight is canon which it probably isn’t). Regardless, the usage of “again” almost certainly refers to something specific.

The ‘Journal’ - As far as can be seen with Rythian’s inventory/the books available through the akashic tome, Rythian does not have a physical journal (although with the retcon inclusion of enderbade/a still standing prequel house in Blackrock and the secrecy of Rythian about the flame in dawnlight chapter 2, that doesn’t rule out a physical book). A journal is a record of knowledge which could be referring to his other (untranslated) tattoos. Although you can obviously be given someone else’s journal, the use of that word specifically could also imply that whatever form it takes, it was written by Rythian before losing his memories. With the importance of journals in Blackrock (the canon gametee journals, Rythian’s season 3 journal, and Zoey keeping a journal in season 2) also feels relevant here. Either if dawnlight is canon/canon adjacent or if the journal was written by Rythian/Zoey and it is a continuation of their character habit of keeping journals. 

“The chant” - This was the first thing that I felt confident about assuming there is any meaningful crossover with canon lore (not that dawnlight is canon, but if knowledge from canon magic can be applied). The chant instantly reminded me of the “healing Word” (capitalization in the original) that Rythian wrote about using to save Zoey after the end of Blackrock season 2. Spoken magic/spells of that kind is a system that wasn’t really elaborated on with the series being cut short, so this could be a chance to use interesting lore elements that never got their time to shine. Alternatively (and more likely if no canon knowledge can be used) is that ‘the chant’ is referring to the rest of Rythian’s tattoos or possibly the plan in general.

“Dead-book” - This immediately reminded me of Saint Peter’s book of names and the sentence being a way to say “if he hasn’t died already”, but 1) I don’t think they are trying to make Christianity canon, and 2) it feels like a weird sentiment to use in the limited space of *tattooing something on someone*. The exception to this is if the text was written by Zoey, and then a less-than-efficient message is to be expected. My second thought is that it has something to do with the necronomicon (or equivalent book). This tracks with Zoey’s Gideon the 9th/skeleton inspired skin, so it fits thematically with future elements of the series. It is unclear if “going to” the book would still mean dying, being jumanji-d, some sort of backup plan, some side project/distraction, or something else entirely. (unless we are going full evangelion and the dead book is the dead sea scrolls in this cristian minecraft server lmao)

“The scholar” - perhaps the most discussed bit since chapter 2 dropped, I am not confident in any prediction ideas that I have had so far. It initially surprised me that ’scholar’ wasn’t capitalized with how it is used which indicates that it is more likely ‘someone involved in the plan’ than someone with cosmic/political/innately magical importance. Most of the characters most heavily associated with death (and therefore most likely to be involved with whatever the ‘dead-book’) are women. So unless one of the translation errors is “he” instead of “she”, that really limits the options as far as theorizing with 0 information goes (and although I would usually call this kind of mistranslation in a series without prominent gender themes (and it would be too early to tell on that front anyways) somewhat of a cop out, because there aren’t a lot of pre-existing female characters in the canon, I could understand wanting to keep it from being too obvious from the jump). ANYWAYS my crack theory idea is that it is Lalnable. Is it likely? Hell no, but ‘doctor’ being mistranslated to ‘scholar’ makes sense, and a connection with the ‘dead-book’ would also track. I am NOT up to date on my Lalnable lore so that makes this idea additionally cursed (istg if ‘scholar’ is a mistranslation of ‘doctor’ but referencing the doctor who themed episode of blackrock /lh)

“What happens” - it is way too early to know for sure but this could mean ‘what happens if they figure out who you are’ or ‘what happens if they figure out the plan’ or ‘what happens when you achieve x goal or use magic or die etc etc etc’. But there is definitely some information being hidden in the missing/mistranslated words there.

“Pilgrimage to the crematorium” - what at first seems to be an idiom for ‘they will kill you’ draws attention to itself with Briony using “pilgrimage” to describe what she is doing. With scripted lore chapters, and especially with both uses being in the same chapter, this is almost certainly intentional. It doesn’t mean they have to refer to the same thing, and I bet they don’t, but the double usage of the word makes me thing that this is more than just a warning. The crematorium could be a reference to the nether (with both of them being a place of fire/burning), and especially with the Styx references, the nether as an underworld would make sense. Again if dawnlight is canon/canon adjacent, I am unsure what the nether has to do with the pla, but since the plan seems to have some cross-realm shenanigans going on, it doesn’t feel like a stretch to include it.