So glad you enjoyed it! It's honestly crazy to me that there's still a pretty steady number of new players, even this many years later. I feel like I got very lucky with the timing on the ending, cause I've seen so many people juuuust barely not close the game before it happens lol.
Anyway, sorry but I don't have any sort of map or design doc that shows what scenes connect to which other scenes. But there are technically 30 scenes in total. (The ending is like 4 of those, and the intro is 3.) So that leaves 23 other scenes to find in the main portion of the game. In most playthroughs I've seen online, people usually see every scene, or miss just 1 or 2 of them, so there's a good chance you saw everything.
I do still have the Trello board I used to organize the game's development, and that has a list of all the scenes. It probably wouldn't be helpful though, because the notes there were only for myself, and thus look sort of vague and reference other internal projects at the time. I'm not opposed to sending you an image of the list, but it probably wouldn't really help lol. The most helpful info I can really give is just that there's 23 scenes in the main portion of the game.