The art and animations are amazing. Music is excellent. The whole thing creates a nice 19th century horror atmosphere.
I'm not sure what a Velocipede is? Is that a French bicycle?
I couldn't see what value my health was at, was that intentional? Or the other meter, is it sanity? I could only see how much money I had and the bottom 3 stats. Also, the cult's influence could have been shown in some numerical way.
There was one section where I thought I had a choice of 2 shops, but they were both the same club (act 2, Le Chat Noir). That might be a bug. Another issue occurred with a club in act 2, the card was labelled Deadstock and the 4th option was off screen, so I couldn't read it. Going to fullscreen mode in chrome didn't help.
It felt like the pace was too fast. I think I only got into 3 fights and entered 1 shop before I was whisked into a catacomb to face a horror. I only had one opportunity to upgrade something.
I think it could do with more sound effects. There were moments where I expected them, but they were absent.
I think the game should have had a screen explaining how to play, at the beginning. A menu providing basic volume options and ability to restart the game would also have been welcome.
The writing was of a very high calibre. It was very descriptive, but not over drawn, thankfully. Just short and sweet with lots of nice details. Excellent mystery horror narrative. The story really sucked me in and I wanted to finish the game, but unfortunately it ends with a to be continued message.
It's a great start to a horror adventure game.