I loved this game. I love Doctor Who, and I love the weeping angels. This was both fun and terrifying. The voice over was a nice touch, too. I enjoyed the door puzzles, though they all seemed pretty easy. Also, thank you for the checkpoints!
One problem I had was the lagginess of the game. I'm not sure if it's just my potato computer, but I feel like it shouldn't have been so laggy. An options menu to turn down the graphics would be nice because it made it pretty difficult to play. At times the voice over was hard to hear because it was overpowerd by the music and the hissing of the angels. The angels also seemed a bit touchy, and if the center of my light wasn't on them, they would come after me.
In the beginning (specifically the second door) I had trouble figuring out what to do. I didn't realize the thing by the door was a button I could interact with. I also had some trouble in the same room. Once I opened the door and went in, the voice over made it sound like the door was supposed to shut behind me even though it didn't. I wasn't able to do the next door puzzle because of the angel, though when I respawned the door was closed.
A bug I ran into was when the door moved up while an angel was on top of it. It flung that angel into the air rather than closing him in the previous room. I thought I was safe but I think the most terrifying thing I've experienced in this game was a weeping angel suddenly dropping from the sky.