This is how you start a TV series. It introduced interesting antagonists with very clear identities, an identifiable protagonist, potential conflicts between main characters, and a story arc which is interesting, and original.
Not to mention, the first impression of the protagonists are well written. Powder has character flaws, and could almost be described as the group's dead weight, but at the same time she's likeable. The audience doesn't feel annoyed or frustrated at her screentime or flaws, unlike other characters that are dead weights, and instead are greatly sympathetic towards her.
In terms of criticism, there isn't anything major. The slow mo shots could feel a little too Zack Snyder at times, but that's just personal preference. The main reason why this doesn't get a 10, and instead a high 9, is that some other shows just did it better. Shows such as Squid Game for example, made the protagonist more flawed, and yet they were more likeable and more relatable.
Nevertheless, this is still a fantastic start to a series. It sets up the arc of the series, while at the same time being genuinely fun and interesting to watch.