Tedious.

To be fair that doesn’t mean it’s a bad game, just that it appeals to a very specific demographic (not me). There is only a story in the very loosest definition, basically there is a big evil thing, kill all these smaller things so you are strong enough to kill the big thing.
Playing solo you are going to spend between 20 minutes and an hour fighting a single monster.
In a way I would say it has a similar appeal to that of the Dark Souls games with a similar, although maybe not quite as bad, difficulty/learning curve. If that sounds like your thing it might be worth delving into, otherwise I would give it a pass.