I wanna preface this by saying that I have very much enjoyed the game so far, and I give endless praise to those who put it together. However, these are some critiques that I feel that I should bring up.
Firstly, I'll address actual bugs and glitches. For the first interview segment, the hitbox for the vibrating area you need to click is way too unforgiving. There are times where the audio straight up peaked but for some reason the spot I had clicked did not work, and have found it to be extremely difficult to beat as such. As well as the first interview segment, all of the others immediately skipped the post death screen (which showed up for about 4 - 5 frames) and sent me back to the title screen. The night 4 interview was completely broken, or very unclear as to what you need to do. After the contract appears, the sound of a pen signing plays, and then I immediately die. I don't know if this is bugged, or I'm missing something, but either way the instructions are poorly communicated. For Miss Suki's mechanics, the fact that you need to switch cameras in order to enter a correct combination a second time feels like an oversight. If I'm wrong, then that could be demonstrated slightly better (overall not that big of a deal though.) When the streamer is not given enough attention, the technical difficulties screen replaces the images for every camera (again, unsure if this is intentional or not.)
Secondly, gameplay that I had problems with. The night 2 interview was extremely confusing, and it took me multiple deaths to figure out what I was meant to do or why I died. For the night 3 interview, there really should've been an audio que or something to indicate that the mirror was about to do something, rather than it just being trial and error. For the night 5 shift, it was extremely unclear what I was supposed to do for the duration of the interview, even after completing it. Within the nights, Crucia is an absolute pushover. The idea of her hiding somewhere in the building and having to use the cameras to find her is interesting, but in my gameplay experience she only ever appeared in 2 different cameras. The ventilation cameras also feel very unnecessary, the audio que is enough to let you know that you need to check it. Other than those things, there's quite a lot of mechanics to juggle in the later nights, it's definitely doable, just incredibly hard.
Thirdly, the voice acting. I'm sorry that there's no nice way to say this, but whoever voice acting for the cassette tape interview in the first night's interview segment, and the recorded audio for night 5 were just awful. Poor annunciation, and badly acted. In the same vain as voice acting, almost all of the phone calls are extremely lackluster. The night one and two calls are good, they do a decent job of talking about the setting, explaining the threats, and what you need to do about them. But from then on, it feels like it only serves purpose to say "Hey, these are the new guys. Bye." It helps keep things brief, but it doesn't smoothly explain the mechanics and breaks immersion.
Now, I'm not only going to leave negative things, because as I said before, I enjoy this game a lot, and it does do a lot right.
Firstly, the interview segments that are functional are amazing. Aside from how finicky the first one is, the rest of the ones that work are really creative.
Secondly, the nightly gameplay is REALLY good. All of the mechanics work super well, and have enough intricacies to feel like you're not going through the motions with every encounter, which even the regular FNAF games don't always do right. The different mixups from all the characters help keep you on your toes and thinking and paying attention. Every character behaves differently and has their own exploitable weaknesses that are very well explained, and the way that almost every character can be deterred in some when they're actually in your office, while being an amazing idea, also does an amazing job at mitigating the difficulty that comes with the large cast. And even with those that aren't as easily preventable, I have never felt that it was the game's fault that I died. Though like I said, the cast is A LOT and it is still very easy to die.
Overall, despite its flaws, I found this game fantastic and I hope these things can be improved. Aside from the issues listed, I feel confident saying that this is among the best FNAF fan games.