I love the concept of the game a lot! There's a lot of potential of this game, the gameplay is quite simple and the link to the count down theme isn't the strongest (it is just literally notes on the top counting down). But the narrative has a potential, it definitely needs more work for a stronger story but still for a jam this is quite nice.
One nitpick is that the character movement feels floaty. Sprinting barely speeds up the character and it makes the game's pacing really slow for not much reason apart from making the playtime longer.
So since this is more of a story game, I think there's some unexplored avenues that the story should've explained. For example the house after the elevator, what is the signifcance of it? I'm sure you had a plan with it, but it isn't explained well in the game so it felt like "it was there for the sake of being there". The twist at the end is nice but it doesn't explain and fit into the plot that you've made throughout the game. And how did the police find out it was <spoiler> that did it? Was it related to anything we did during the game? Again I'm sure you had an idea for it but it isn't explained well in the game. It's quite open-ended and there's a lot of interpretation (I do have an interpretation of the events in mind!) but you should answer some of the questions instead of leaving everything unanswered. Still I think it's a charming attempt at a story-driven game! More thought into the narrative and it could be interesting.