I'm not quite done yet, but this has been tons of fun so far! (55 days/5 hours in, currently)
The puzzles have really been a high point for me. I think you've taken the crown for hardest notches-based modulo puzzle in a TF game, haha. Even once I knew how to get the solution I still needed to break out my calculator.
The puzzle with the 4 statues was a highlight among the puzzles, personally. It struck the right balance for my tastes in challenge, where I feel an additional hint or two could be useful for some other puzzles (in particular, the hidden item in the town).
The dialog has been great as well, and the couple of TFs I've seen have been well executed too. It looks like it's only possible to see two TFs for the player character per playthrough unless I'm mistaken, so hey, there's some replay value there.
I also have some bugs to report, but I don't know if you'd rather have me DM those to you or something, haha. (I had someone get annoyed at me for publicly posting about typos in their project a few weeks ago, so I feel like I need to ask, haha)
Oh, and since you finished during November, this is eligible to be entered into the ongoing TF game jam that Yafath and MalicTheWriter are hosting. You might be able to get a few more eyes on this by submitting it there!