Really enjoyed it! Visually its clearly much better than X1 and there's alot more little touches like the midboss blasting off or the lighting in the boss fight that make it more exciting to watch.
I was most impressed by the boss fight honestly, the bosses in the first game always felt abit lacking to me somehow. This time it feels like there's a meaningful back-and-forth to the fight that keeps it interesting. The stagger meter I thought was especially interesting, haven't seen something like it in another game before. I assume it's to balance and limit the dps of the 3 chars? I'm still trying to figure out who it's meant to help and whether it's better to keep attacking until they stagger or to hold off so they don't get invincibility.
For char playstyles, Seiran seems good for stages bad at bosses, Ringo good for bosses bad for stages, then Reisen in between. Seiran's boss got alot easier once I stopped staggering them somehow. I do wonder if Ringo should do abit more damage though, it took me around twice the time to kill the midboss with her compared to the others. And, I don't know if this is placebo, but Reisen felt abit slower than the others when running or dashing on the ground for me. Might be because of her larger silhouette with her hair and long skirt, but dash-walljumping felt just fine on her for some reason. Another random thought I had (and this applies to X1 too) is that the level designs feel more condensed than the typical mmx stage would be, though that might be on purpose.
Overall, I'm very impressed and much more excited for the full release now. All the best on the rest of its development!