I'm really not a fan of the "do chores until scary thing happens" that seems to be the formula for indie horror, but this game manages to avoid that groan inducing monotony through its charm. Its hard for me to get mad at a game that's cute.

If I might make a personal recommendation though, I think the game would have been better if there was something actively chasing you down during the final sequence. Once you realize its a timer it loses a lot of its fear factor. I got the bad ending initially, but in the time of the final sequence I managed to get back to the exit, THEN back to monster, THEN half way back to the exit again, before finally dying. This was without really even trying as I hadn't the slightest clue what I was doing (in a good way). All that to say, either add something chasing you or make the timer far more strict (with maybe some visual cue of how much time you have left), it would keep the tension without the "wait hold on what am I supposed to be doing?" thought.

Also I'm 99% convinced gramps getting out was a mimic-like of some capacity but I guess he's not? Idk its your plot, admittedly its more of a twist that he got out alive. Do what you will with it, just found it slightly confusing.