So - this was excellent!
The visual style and sidescrolling nature of the game reminds me of the original SNES Clock Tower in all of the best ways, while Mr Hopps is a genuinely freaky adversary that had more than a handful of surprises up his sleeve for me, spooking me quite effectively in a lot of places! And let me say, I REALLY appreciate that you had the forethought to give the player checkpoints between finding tapes - so many games send you on these scavenger hunts that I am not usually a fan of, just to kill you and make you do the whole thing again. This was MUCH more managable and thus far more enjoyable than frustrating.
If I have to touch down on anything, there are times where Mr. Hopps' stalking takes entirely too long. There were many times I sat around behind the couch in the living room for up to 30-60 seconds because he frankly just refused to leave, and you had no way of knowing if he'd immediately turn back around whenever he walked off screen. Maybe give him some more patrol-esque movement patterns to alleviate this.
And of course, as you can see in this playthrough (and I dunno if you fixed this - I downloaded this on day one and played it later), there is a pretty bad bug by the end where dying at all makes your gun refuse to work on subsequent attempts until you exit to the main menu and come back. Could easily throw folks very far off.
But either way - this is excellent. Music, design, scare style, space between scares and objectives - great stuff. So well done. I loved playing this.