I reached the Antechamber on Day 3, my discoveries and feedback. Spoilers included.

[Paper Boat]

So after 3 days in the game, I managed to get to the ending of the demo. I found this game extremely fun, and I had an absolute blast playing it so far. I disliked that it ended my run a day early by reaching the antechamber, as I had managed to get 3 permanent unlocks as well as 2 room upgrades that would have been fun to use on the last day. Overall, it was an absolute joy to play through and discover new things which had me so excited to go back and explore rooms I had already been in further. I highly recommend a blind play-through if you haven't explored yet.

Some discoveries I've made so far in this game:
There are 3 permanent unlocks I've achieved out of what looks like 4 on the inventory screen, and I have a theory on the 4th.
1. The western garden gate on the outside of the mansion can be opened by turning the garage power on using the breaker box and going outside through the garage. This unlocks the outside room which can give a buff depending on the room drafted.
2. The gem mine will allow you to start the day with +2 gems. This can be unlocked by solving the VAC puzzle on the breaker box, done by first setting all of the lights to purple, then setting the lights to {off} {blue} {green} {white} {red} {purple} These codes may be found in the email on the office computer.
3. The apple orchard will allow you to start the day with +20 steps. This is unlocked by entering in the code 1128 in the padlock of the gate by the camp site. The code was discovered by restoring power to the dark room after entering it and using a magnifying glass on one of the pictures.
4. I suspect that the 4th permanent unlock is related to the gymnasium, as all 3 of the other unlocks required the breaker box to achieve.

There are 3 levers which are required to open the entrances into the Antechamber, 2 of which are fairly easily accessible.
1. A lever exists in a room opened by the Silver Key, behind a locked door. This opens the east door of the Antechamber.
2. A lever exists in a room opened by the Secret Garden Key, after a simple wind vane puzzle. This opens the west door of the Antechamber.
3. A broken lever mount exists in the greenhouse room, which is supposed to open the south door of the Antechamber. I have not been able to open this door yet, however I have obtained a broken lever item from the workshop. To note, the workshop will allow the Sledgehammer or the Shovel to be combined with the broken lever, however it also wants a 3rd input I have not determined yet.

Rooms:
Security room: The terminal's password is swansong (most likely a reference to H.S. Sinclair's niece Mary Matthew Jones (Marion Marigold), who wrote under an avian pseudonym, and stopped writing after a terrorist attack that she was somehow involved in). Blue memos are true, red memos are false.
Chapel: While it takes 1 coin every time you enter this room, money can be re-obtained once by lighting the candles using the combined items of magnifying glass and metal detector. The stained glass windows also are numbered with different gods/goddesses(?) which all have different themes. The gardener's journal refers to the goddess in window 1.
Office: I have not yet discovered the code to the safe, however there is a red memo that can be found in the conference room stating the password is 9083. Accessing the email allows for the solution to the VAC puzzle on the breaker box.
Music room: Contains sheet music 1-4, which contain the bold words {first} {word} {on} {the}. Combined with the 8th page found in the workshop, {message}, I suppose that it reads "First word on the pages is the message." This results in " Find among the white _ _ _ stones. This might be related to the flowers alluded to in the gardener's journal in the apple orchard. Alternately, this might refer to the dig spot between stones near the campsite near some white trees, which unlocks the conservatory room blueprint.
Laboratory: Reading the periodic table with the numbered chart results in " Push three up after nine." Most likely to do with the lever puzzle, but unconfirmed as I have not seen the Boiler room yet. There is an experiment chart on freezing water that refers to the Freezer, which I have not been inside yet, but saw in the draft list (on rank 8 or 9? Cannot remember which.)
Workshop: Combining different items results in new items. Magnifying glass and metal detector allows you to light candles and ignite fuses. Candles can be lit in the Chapel, I have not found any fuses yet, it does not refer to the missing breaker for the cabinet on the breaker box. It might be for something crafted in the laboratory. Additionally, the sheet music refers to hand carved stone, which I was able to observe on day 2 as the letter E, and day 3 as the letter L.

[Paper Boat]

I also found a newspaper in the Morning Room, which is added to the draft pool when you buy the Bacon and Eggs in the kitchen. It was dated November 5th, I thought this might be related to the Drawing Room safe due to the picture of the newspaper boy with a newspaper reading "EXTRA" under his arm.

[coolbarryo]

Ursprungligen skrivet av Paper Boat:

I also found a newspaper in the Morning Room, which is added to the draft pool when you buy the Bacon and Eggs in the kitchen. It was dated November 5th, I thought this might be related to the Drawing Room safe due to the picture of the newspaper boy with a newspaper reading "EXTRA" under his arm.

can confirm, not the case. just tried

[billyboizburgerz]

Has anyone found where the basement key can be used?

[coolbarryo]

Ursprungligen skrivet av billyboizburgerz:

Has anyone found where the basement key can be used?

no, i am searching for that as well. it may be similar to the garden key in that you simply have to use it in the correct location. garden key being on the east wing

[Arrow]

garden key can be either wing, most of mine have been on west

[coolbarryo]

Ursprungligen skrivet av Arrow:

garden key can be either wing, most of mine have been on west

had no idea ty thats good info

[Mav]

Ursprungligen skrivet av coolbarryo:

Ursprungligen skrivet av Arrow:

garden key can be either wing, most of mine have been on west

had no idea ty thats good info

Note the East side is generally better though, as explained in the Gardener's logbook in the Apple Orchard, those locations yield more fruits/flowers.

[Arrow]

is there a way to get outside the east wing? like the garage? i havent seen it yet if you can

[Paper Boat]

Having now found the final two music sheets in the ballroom, I can now confirm that the message in bold reads "First word on the sheets are true message." reading the first word on the music sheets reads "Find among the white trees under two stones." This refers to the patch of birch trees near the campsite and apple orchard, which unlocks the conservatory blueprint if dug up. I'm still trying to draft the conservatory right now.

[coolbarryo]

Ursprungligen skrivet av Arrow:

is there a way to get outside the east wing? like the garage? i havent seen it yet if you can

dont think so. there is a letter that alludes to you not being able to. in the orchard house, it says that the grounds to the east were not maintained due to the madame's death. [/spoiler

[coolbarryo]

Ursprungligen skrivet av Paper Boat:

Having now found the final two music sheets in the ballroom, I can now confirm that the message in bold reads "First word on the sheets are true message." reading the first word on the music sheets reads "Find among the white trees under two stones." This refers to the patch of birch trees near the campsite and apple orchard, which unlocks the conservatory blueprint if dug up. I'm still trying to draft the conservatory right now.

right there with you.

[Mav]

Ursprungligen skrivet av Arrow:

is there a way to get outside the east wing? like the garage? i havent seen it yet if you can

Dunno... I've been trying as well. I did find a note in the Hovel (outer room) explaining how to get Cloister grounds access which might be it? But I've not been able to get any Cloister room yet.
The note text: While face to face with the angel, press the base of the two pillars on either side of you. And I think it might be related to a hint given in the Gardener's Logbook in the Apple Orchard shed... which mentions him wanting to replace the angel statue of Orinda, with a statue of Rynna who looks like a farmer with an apron and a garden hoe.

[coolbarryo]

Ursprungligen skrivet av Mav:

Ursprungligen skrivet av Arrow:

is there a way to get outside the east wing? like the garage? i havent seen it yet if you can

Dunno... I've been trying as well. I did find a note in the Hovel (outer room) explaining how to get Cloister grounds access which might be it? But I've not been able to get any Cloister room yet.
The note text: While face to face with the angel, press the base of the two pillars on either side of you. And I think it might be related to a hint given in the Gardener's Logbook in the Apple Orchard shed... which mentions him wanting to replace the angel statue of Orinda, with a statue of Rynna who looks like a farmer with an apron and a garden hoe.

instructions for cloister below
Cloitser is a rare draftable green room. recommend you give 4 gold to the shrine to boost your odds for a rare room to make the search easier

[billyboizburgerz]

Ursprungligen skrivet av Mav:

Ursprungligen skrivet av Arrow:

is there a way to get outside the east wing? like the garage? i havent seen it yet if you can

Dunno... I've been trying as well. I did find a note in the Hovel (outer room) explaining how to get Cloister grounds access which might be it? But I've not been able to get any Cloister room yet.
The note text: While face to face with the angel, press the base of the two pillars on either side of you. And I think it might be related to a hint given in the Gardener's Logbook in the Apple Orchard shed... which mentions him wanting to replace the angel statue of Orinda, with a statue of Rynna who looks like a farmer with an apron and a garden hoe.

The cloister is in the center of the house, it's just like a fourway courtyard. You get an allowance of two coins for accessing the angel/god statue in the middle of it.

[Wykah]

Just to add a bit more on the pictures puzzle. The letters in the rooms are not random. You need to unlock the study for the explanation on how this works.
I've also managed to get a handle for the greenhouse from a random dig.