As someone who's played through the game countless times for playtesting and troubleshooting purposes, I totally understand the feeling of tedium! Also the frequency of the scares is all down to RNG, meaning some runs you get more scares than others.
There is a lot more I wanted to do during development to make the experience feel a bit more varied, that I just didn't have time to due to the short development window - I'll probably talk more about this in the post-mortem devlog I eventually plan on doing.
Thanks for playing! :)