I loved the "jumpscare" in this game - it definitely got to me!
The difficulty increase over time was great, too. I upgraded in such a way that I was never in any real danger, but the increasing difficulty of the work words (especially the first non-word that you had to type before scoring work points) added great stress, especially since the fun words stayed the same. I was originally going to complain about there not being a clear timer of how long you have before your boss arrives, but after thinking about it, I'm glad there wasn't a timer. The boss arriving each hour felt abrupt and scary, which is how it should feel!
I still think that showing the score calculations can be more confusing than not sometimes (I care less about how things are calculated than what the score is), and after finishing I'm not sure what fun points get you, but I really enjoyed it regardless!