These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Dread Out
That One Boss: The Scissor Ghost is widely considered to be this, mainly due to his lightning fast attacks and having a weak spot that can be hard to hit due to his aforementioned lightning speed.