Been loving the game so far! You've nailed the gameplay loop of the classic games.
Though Freddy & Foxy are a bit odd (for lacking a better word) as they don't really behave like their classic counterparts. As they still move even when you're on top of them (especially Freddy as you can practically make him stand still in classic if you keep on top of him).
Also, while definitely a personal/objective thing I personally don't like this game's Phone Guy. He's just a massive dick and I always have to mute him when the call comes on.
The blink-and-you-miss-it Easter eggs on the other hand are a nice addition to the game (even if octo-mum Toriel is personal a bit off putting and the shinning reference too. Seriously why is this place just leaving that door in that state?!).
The game over scenes are fantastically animated and the voice acting isn't over the top which makes the scenes feel complete. (Also somehow got Golden Freddy and I love the detail of Foxy getting turned on when she gets in the office)
(P.S. Don't know if it's possible but, since the fan as a face in this game. Personally I think it would be funny if its face went from ":)" to "D:" when the lights went out)