Hey! I just played your demo, and as someone who loves playing and making escape room/adventure games, I found it really fun to play through!
I think the story setup is really interesting and kinda novel for a death-game style story, which is awesome. The cast is also pretty diverse in terms of personalities, which is super useful to make funny/interesting interactions happen. I do think the pacing was kinda fast (I'm aware it's only a demo so I understand that maybe some things were cut). I feel like Kai and Zoe's characters weren't given enough of an introduction, so the story beats feel rushed at times.
I loved the colour palette, it really pops out, which is super useful for point and click style games and retaining player interest. The character sprites were also pretty colourful and I found their designs pretty cool too. As a piece of advice, I think their arms could be worked on, they're a little bit out of proportion (and poses in sprites are really important!).
As I said, I like the setup and where the story is going (is Zoe the culprit or is she a victim too?). I think mystery games where you can get ahead of players' expectations are the most interesting ones.
Overall, good job! Looking forward to the full release.