It took me a while to realize the pausing would pause the surroundings.
Would have been fun to add in more of the limitation, maybe in that you only have so much film or battery before it runs out, so you have to pause / shut off the camera. If you decide to expand on it, I could see multiple directions you could go, whether that is a horror / thriller, or increasing the pace. I like the minimal sound, such as the snow crunch, but could imagine and would love some calm voice lines for the main character as you find bodies or important objects. I didn't have time to play through the full game, but might come back to it later!!
Overall, loved the mechanics playing with the surroundings. You have a great start to an interesting game here :)