I just hope it'll still come out. Although, this year HAS been good for video game franchise installments that previously had no hope left (Deltarune, Silksong, Tomodachi Life) so... there's still time :0
I also agree with xefros re: worldbuilding (god i'm such a sucker for Alternia worldbuilding) and anomaletix on gameplay. I hope Act 3 puts the Adventure Game back into Hiveswap: Homestuck Adventure Game, you know? I don't hate the more visual novel-like angle that Act 2 took, but it definitely felt like a bit of a downgrade from Act 1 because it was so well-made. The developers were able to tie together Homestuck's signature sense of humor and mystery without sacrificing fun gameplay, which I hope they can pull off again.