Well, tbh, if they are...... not that "good", then you can just rush 'em down like i told you before, but Az's dash ain't the best for that, well, you can dash through projectiles, but lol, netplay.
About about Haku vs. Nu, you can either sit on the other side of the screen and DIE, or you could try to get in, out smart the player, but still Haku's dash. like, can't you just 623A through the projectile and move forward in the process? Like, Haku can kill Nu once he's in cuz lol, that dmg, that health. Like, just go to training mode and find things that can be useful against her Ds, like, to stop them. And remember, you can 236236D 5DD>4DD for free