I solved all the puzzles, though it did take a bit of experimenting. Some of the clues were pretty straightforward, while some I had to think very sideways to figure out. The phone numbers really tripped me up. The primary number you were trying to figure out was 10 digits, but you also had two 5 digit numbers and one 4 digit number to call. I think it really would have helped if all the numbers you had to call were the same length or you made it clearer that the shorter ones were meant to be that short. After deciding I was just going to try calling one of the numbers, though had planned on trying to combine two of them to get to the 10 digits I thought I needed, everything else fell into place fairly well.
I also think it would have been nice if I could have zoomed in on some of the pieces of paper to get a closer look at them. I found a few of them hard to read, and I felt like I was missing a few things, even if it was just flavor text.
I wish there was a way I could have turned the smoke detector sound down or off. I understood why it was there, but it bothered me enough that I played the game mostly with my sound off so I didn't have to listen to it. I turned my sound back on a couple of times because I wasn't sure if there would be a sound clue I needed, but then turned it back off so I didn't have to deal with the smoke detector.