Hollow knight is a well-crafted game, not only does it have quite the good difficulty curve, from the forgotten crossroads and the false knight, to things like the path of pain and nightmare king grimm.
The art style is absolutely beautiful and it's a recommendation to anybody who enjoys platformers and metroidvania's.
Of course this game also has its tedious moments, like the pantheon of the hallownest, but it's only more satisfying to beat that big bad moth up.
I would recommend this game to anybody, but i definetly wouldn't recommend to try to perfect the achievements if you dont have patience and a bit of self-control.