Apparently the game has just launched into Early-Access:
https://store.steampowered.com/app/1537910/Chaos_Galaxy_2/Sam (among a few other YouTubers) have new LP's up showing off footage:
I remember stumbling across the first Chaos Galaxy a couple years ago. I remember it looked interesting, but that the art-style and music were a bit more anime-style than I typically care for; it appears to be the same with the sequel as well. Still, if the gameplay & mechanics themselves are solid, this could be worth a look.
It's also hard to argue with the price (currently $14.39USD). Unless the game is an absolute stinker -- and the first one appears to be decent enough, so that's something -- I'm guessing it wouldn't be difficult for one to get their money's worth.