TL;DR I talk too much. Artemis is really good. The quality of the writing is excellent. Play it. Make your own mind up about it.
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Out of all of the 'gold standard' AVNs you'll find on this site, I think this just might be my favourite. I'm sorry Eternum, Desert Stalker, Being a Dik etc. - love ya to bits, but Artemis edges (heh) them out and really seals the deal for me in terms of the quality of the 3D scenes, how animated the renders are (seriously, I love the attention to detail for small animations, like Kindra doing the cute speed blinking, hand gestures that express emotions etc.), the excellent standard of writing/grammar, the characters, and of course the story.
As many have said, this is a slow burn so if you're here to pump and dump, you'll have to keep looking. I think however that the slow burn works in its favour, and the payoff from following the MC's story is - so far - very satisfying. If you want something to feel invested in, I think Artemis has a lot to offer however like all things, it's not going to be everyone's cup of tea. I've seen criticism of the lack of intimate scenes, which I get but clearly Artemis isn't trying to be 'that' kind of AVN. It could be argued that being in the same place as porn/quick-thrill games is a dis-service to this AVN because it gives particularly horny people the impression that it's something it isn't.
Slight tangent but one of my pet peeves with any AVN is bad writing, especially writing that feels forced/unnatural just to put the MC in situations where they can have their way with other characters. I can look past bad/low quality renders, I can look past the use of common scenes, 3D models, and audio assets, but I cannot ignore bad writing - it's like taking a cheese grater to my wrinkly brain. Artemis has some of the best writing in any AVN; it's not quite Pale Carnations (seriously the writing in that is poetic), but it's very natural and believable.