If you don't like grinding then this game is not for you. I personally didn't mind it because at the time I played it there was a stream I followed religiously so I would harvest mushrooms and farm materials while I listened to that. It was comfy.
Not even whaling will help you skip the grind to a significant degree because you can't directly buy specific materials or consumables.
That being said, the gameplay is pretty good. It has a bit of a Souls feel thanks to the controls and deliberate animations, but you can also sneak attack, do wrestling moves, dual wield and perform special attacks. The best weapons for me were the iron and the katana, but there's a lot more to choose from.
On a different note, I really like the visual style and presentation in general. Each area of the tower has its own distinct theme and every song in the OST is called "Let it Die" which makes it a pain to find a specific track.
What I don't like about the game is its always online nature. This is used to great effect for the procedural generation of levels and interactions with other players, but I could do without that if it meant that this game wouldn't get bricked some day in the future. Hell, maybe by the time you are reading this the shutdown already took place, I don't know.
In order to end this review on a high note, I want to mention that this isn't the only game I know where you can eat a lizard alive because Rune Classic exists. Believe in the power of the mushrooms!