Trepang2 Iceberg (WARNING: SPOILERS)

(Iceberg created by Nightie)
Level 0: 
Serenity is pretty much the main theme of the game, pretty wide known just like every other entry. 
Director - Raven - TF-27 are all members of the Syndicate with the Director being its leader and Raven being the pilot, while TF27 is their fodder combatants.
Anton Lazar - Horizon both related to one another obviously, Anton is the CEO of Horizon Corp. 
106 is us!
Level 1:
Cycles are supersoldiers made by the Syndicate, either super in strength like 106 is or super in their brains like some other cycles are (Emerson and Anton).
The Cult is the third enemy faction, kidnappings and illegal deals with satan to create meat hulks.
DLC is not cosmetic and the sole reason its here is because everyone knows of it, unless it means the Bladekisser DLC.
Mallcops are the main enemy you'll encounter, just chads.
Alternative Ending is what you get for collecting all drones!
SWORD SWORD SWORD SWORD, we'll get it in the next story DLC.
Level 2:
Bladekisser is the name of the new DLC, sword.
Battle Sim is probably referring to the combat sims at the TF27 base that 106 can just train in.
Bunny refers to the bunnies underneath the TF27 base and one in Jorvik that disappears when you pick it up.
Cheats are unlocked ingame by finishing certain requirements.
HL References are probably the Horizon Engineering and Construction Unit (HECUs) and maaaybe the Black Ops.
Phanns are the name of the TF27 combatants you encounter, who also have their own IDs with user names, even saw one named Brandon at some point.
"Oh you're sober..." refers to the Rangemaster making fun of you for missing shots at the range OR specifically shooting him.
Emersus is an achievement you get by shooting Emersons body and destroying it, has that egyptian deity or god on the icon that looks like an amongus.
Level 3:
Trepang2 was in development for 6 years (I think that's what the entry is referring to).
30K$ is how much money was spent on Trepang2, Brandon himself said it.
HHQ Screams are things you hear if you silence the music and enemies (by disabling AI), thats the screams of people who are operated on without anesthesia and their brains placed in those tanks you blow up.
There is an ACTUAL Horizon website, here: https://horizon-corp.com/
There are TWO Brandons, ones the dev and the other a VA.
"BREAK THE CYCLE" is the main theme of the game, could mean anything just use your imagination.
LMG-106 is referring to the new automatic weapon we'll be getting in the Bladekisser DLC, oh how I wish for a revolver to dual wield.
Level 4:
Roman Numerals refers to the coins you pick up and whatever is etched on Patty's helmet, said numerals belong to previous cycles.
Boat Picture, refers to a thing found in the old demo of Site-14 behind a locked gate. Its a picture of a white sailboat with lots of blue, the darker blues being the ocean and the brighter being the sky.
Pandora Experiments, good ol Doctor Kramer tested on the people there which made Horizon look worse and if I were to go by anything I think he's a double agent for the Syndicate.
"Erase Your Light" exists in almost every track as a leitmotif, as Brandon himself said: 'it represents 106 reversing his brainwashing'.
2020 Pandemic, not so sure either but it could be tied to the 'Alchemist' HVT who just hates medicine and science and uses ye 'oldy methods to heal people.
Level 5:
There are more than 1 mothman, and it could be true considering we kill the 2nd one while a log states they killed the first one, I think.
"Cummies?" its that weird creature, I have no idea about its origin but I think it appeared once in the discord server before becoming an emoji.
"Patty is made out of fire" probably true, considering that he looks like a candle with wiring underneath that sickass mask.
"Dabie Dabs" now thats also I have no idea about, so anyone who wants can just talk about the entry for me. 
Patty's sword refers to that one log image with him sitting and using a sword for a hand rest, the pose is pretty cool though.
Level 6:
Real Doctor Emerson is referring to the fact theres an ACTUAL scientist with that name who got confused over people trying to find the game version and finding him instead.
School Flashback refers to the 2019 demo having 106 run away from shadow chads during a Site-14 sequence in a school.
"The Hidden" reference is in the Black Ops voice lines where they say something about Subject-617.
"Cognitive Dissonance" is something I cant piece myself but maybe it could be referring to 106s psyche?
Blue Danube, refers to the gramophone from the Demo and the music that plays in Emerson's room, the classical piece is used in those two instances.
Level 7:
Old Lore refers to things prior to 2022 and 2023, including some entries of Emerson leaking stuff being shown on TF27, they kept those textures so maybe its not that old.
Krakens? Yeah, the Syndicate hunted them down with the first Cycle/Subject.
Mind Transferring refers to this! https://steamcommunity.com/app/1164940/discussions/0/3811783679198166495/
Arkansas Coded Message, no idea either, man am I behind lol.
Boat Mission refers to a cut mission named "Blood Moon" within the game, maybe it'll return.
Cycle - 1 is referring to the guy who killed the krakens with the Syndicate.
Syndicate is the Illuminati, its quite possible considering their usage of the triangle with an eye in the middle.
Level 8:
Director is an AI, not sure where does that come from but judging by the fact she's pretty much there 24/7 its not that far fetched.
"Heli Band Deaths" could refer to the gravestones outside the TF27 base, the crashed helicopters outside Site-14 or Horizon HQ mission where you can see the destroyed helis all around.
Backrooms Survivors, probably the Site-83 Hazmat Soldiers we see that talk about: "This thing is just playing with us" since 83 is that anomalous and spooky BUT it could also refer to all the writings on one of the walls in the first backrooms area, the wooden one, found in a secret passage.
Dopamine, this one is referring to the fact that 106 gets dopamine boosts from hurting people.
FBI Wanted refers to that one screen that shows Anton being put on an FBI wanted list.
106 feelings, refers to when 106 doesn't use the breaching charge in Horizon HQ and just bashes his way through to kill Anton but Wilson also stated that something took over besides emotions.
107 is a prototype, not that unlikely seeing that he lost to a previous cycle and used limited moves.
Level 9:
Syndicate is real, oooh ohoh scaryyyy!!!
Bridge Massacre refers to what happens in Horizon HQ, while we're down below and blow up some random structure the Syndicate massacres everyone outside the HQ and has explicit orders for 106 not to SEE the Syndicate do that.
MK Ultra, something about mind control and brainwashing within the game (also its a real fucked up CIA thing).
Pain screams are real, because the VAs hurt themselves by accident while recording (I'm pretty sure they screamed perfectly, not hurt themselves so I don't think this one is real.)
Trepang2 is a prediction of 2035, the world would be pretty shit if that is the case, but we'd have cool Mallcops IRL so I can't complain.