Impressive game with a great atmosphere! The locations remind me of good old medieval RPGs, like Gothic, Risen, or The Witcher. It was a pleasant surprise, as screenshots on the store page show only the dungeon part of the game, which doesn't really do it full justice.

The puzzles are diversified and remain interesting throughout the game. The puzzle locations are clearly marked, and all notes and items are easy enough to find, so there's no pixel-hunting. Although all puzzles are logical, some of them expect us to remember some minor details from the notes or the environment, which turns out to be quite difficult in the main chapter, where there are 3 floors with multiple rooms. This requires either a lot of patience, or peeking in the walkthrough. Most of the puzzles are well implemented, although I remember one that could use better UI: I'd never guess that the switches on the Tinkerer's machine need to be toggled multiple times and in a specific order, as there's nothing to indicate that the state of the machine changes.

I liked the style in which the notes are written, with the story blended with information essential for solving puzzles. However, I found a few of the notes to be somewhat confusing. For example, Note 9 talks about checkmate, but there's no checkmate in the depicted chess position (actually both kings are in check, which is not allowed according to standard chess rules). Note 20 mentions a "mouse's hole", which turns out to be just an allegory, even though the rest of the riddle directs us to some actual features of the dining room. Note 23 suggests that the glass tube can be somehow stolen from the Tinkerer's workshop, but the relevant information turns out to be completely different.

The Garden of Secrets is a nice addition that could very well be a separate game. It doesn't rely on notes, but more on hints in the environment, and I found it slightly easier, closer in difficulty to the beginning of the base game, which is a step in the right direction in my opinion.

All in all, the game is a great value and certainly deserves more traction. I'll be on the lookout for more games or updates from the devs.