Someone at work was on about it, I will have a look at the weekend (Wife is away!)
Level 46 now, really polished game.. pleasantly surprised tbh!
It was in beta in korea in either late 2018/early 2019, went through a rework, and the equivalent of at least 1 if not 2 expansions post then.
So yeah it's quite mature compared to a typical release.
I'd want to try the other characters and various builds before knowing which one I'd want as a main. Kind of a moot point atm since they've massively underspec'd the EU region and many, myself included, can't even log in.