-To get the Fuse, you need to pull the lever in the fireplace and go inside and get it before you watch the video tape, the fuse disappears after that. Fuse will give you access to the attic.
-In the video tape, there is a lockpick behind the microwave in the kitchen on the floor. Using the lockpick on the locked drawer in the kitchen will make it available in the current era to be open, where one can find the Axe.
-You can pause the game and choose 'stop video' while playing a video tape to stop the video tape and return to the main game early, BUT win conditions for the video tape that will make the backyard key appear (which only appears after you finish the videotape scenario) will not appear until you see the ending of the sequence.
-You can unlock the backyard door with the key and not open it (which will not kill you, only kills you if you open it).
-The Axe has a heavy attack, which you can use by holding L2 and then swinging it.
-Checked every corner of the videotape and regular world, literally everything one could think of, to see if there was another hidden item like the Lockpick. Nothing, and literally spent an hour searching.
-Up the stairs to the second floor, there are three mannequins there. If you enter the room and look away from them regularly, they will turn around to look at you, and a new mannequin you can move will spawn by the stairs. If you activate the stairs to the attic with the fuse beforehand, the mannequin cannot spawn on this floor. There is a phone in the attic who will change what the person on the line will say based on whenever you made the mannequin spawn or not. If you made it spawn, it will give you a line about memory. If you did not spawn it, it will give you a line about choice. No idea what difference this might make.
-After you pick up the phone, you'll usually die, but if you have the axe, you can swing your axe around to get back to the first floor and you'll be fine.
-In the videotape, there are various scenes of a 'ghost'. I have seen her spawn in three locations, outside across from the door the guy kicks in, in the hall in the room with the hanging dolls standing in a corner, and when you climb down the ladder to get to the basement. She always is only on screen for a second and then disappears, and she only seems to appear if you are in the right place at the exact right time when the other two characters are going along their automated cinematic path. If you go too far ahead to early, or come to late, you seem to miss it. The easiest one I have had time triggering is the one in the hanging doll room, which appears as soon as the guy peeks in and turns around if you follow at the right time. In the RE7 trailer, there is also two split second images that show this same ghost in two areas in the demo I have not managed to see her in, one in the window behind the microwave, one peaking her head through a hole in the ceiling.
-You can use the axe to destroy the boxes and the mannequins you can move, but I have found no other practical or useful use for it yet. The same goes for the Mannequin Fake Finger, found absolutely no use yet.
-Not sure if important, but the phone cable is notably blue, and an interesting detail, you can find a low-hanging blue cable from the phone in the kitchen by the entrance from the front hall. Not sure if important or an attention to detail.
-In the RE7 trailer, it shows areas from the demo, but it shows a few rooms that we haven't found yet, implying there's some rooms we haven't been to yet in the demo (they all look to be set around the demo area).
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