Honestly, its fine if mechanic descriptions are a bit vague and unclear BUT only if they are easy to figure out through trial and error. If it takes a long time to learn independently, then it is a problem. Sammy64 was one such problem. She came to the door so fast that it took me many runs to even realize you could see her on the cameras, and then more trial and error to learn she could enter any door. The Nile on that same arcade stage gave me similar issues, as it was not clear that I needed to either click on her EXACTLY twice, or click on her once while the meter was increasing, which again, I wasn't able to even catch happening until quite a few runs went by. Another issue I had was Arcade Poppi's game. I would generally cancel out of the arcade mini-games after beating them to get back to the cameras faster, and it seems like you have to wait just a little bit longer on Poppi's game specifically or it won't give you credit for finishing it. Figuring out the claw-machine took me a little longer than it probably should have as well, so I wouldn't mind some clearer instruction on the machine for how to control it.
Personally, I have fun even while I'm frustrated, as it just makes the satisfaction of passing a level even better, but I imagine most people were a bit less pleased than me. Overall, I think the difficulty is fine (Though I did notice those couple spikes) its mostly just the clarity issue that gets in the way of progress.
Also, Hearing the phones ringing drove me absolutely nuts after playing the game for quite a while. It would be nice if the one in the bar(?) room didn't start ringing every time, forcing you to listen to the message again lest be tormented by the endless ringing.
I still don't know what all the tokens do even after a small amount of testing. I figure they would be really important for a 80/20 kinda mode, which is a really cool design, but due to the high corruption cost, I have basically ignored them thus far, mostly just trying to avoid accidentally clicking on them. I do use the level down one sometimes, but event that is rare for me, and that's fine honestly.
Oh, and last note for now, but finding our friendly trashcan hacker's spawn locations was something I struggled to learn, took quite a while to figure out which locations she could spawn and where on the camera you could see her, mostly because I had to focus on more pressing tasks. I don't think its too unfair necessarily, but maybe highlight her trashcan on the camera if she's been sticking around for an excessive amount of time.