Love the art, bgm is cool too, sound design is sooo annoying when you're already trying to figure out what to do, but I guess that's exactly what it's aiming for!
On the main menu it seems the box collision of the button Start is only on the text rectTransform while it should extend to the whole UI art I think, so I had to point to the text slightly at the bottom of the (art) button, which was strange. Either than that, UI seems to have been fun to make!
As for the gameplay section, I didn't ever saw the "Saw"? I mean, there were something that looked like a saw, but was name "knife", and when I retried the game (had to reload the page because for some reason, going back to main menu and "start"ing had not restarted my lives count) I was asked something else, which I could bring to the doc, but when I took it, the doc blocked my way? Like, I know they really want to save the guy, but please let me move T0T. Soo I guess I could bring it to them directly? That's what I thought... Doc didn't take the thing and didn't move, I was blocked between the surgical tools and them, looking right through them and hearing the countdown ringing. Poor guy didn't make it and died... I'm so sorry I would not have been a good assistant..
Anyway, I guess that's a bug, or maybe not and you may help us know how to give the Doc the tools they want ? The game in itself has an amazing concept and reaaally great art, 3D is really beautiful, as well as lighting and overall ambiance, 2D Art and Music are great too, good job !