The Arcade Challenge! Update! Title update for Hi-Fi RUSH has 10 achievements.
Try out the arcade cabinet in the hideout.
Clear a run of BPM RUSH! (Easy or Normal difficulty.)
Clear a run of Power Up! Tower Up!
Unlock the Special Attack "CNMANIAC" and use it in battle.
Unlock the Special Attack "My Hero!" and use it in battle.
Clear BPM RUSH! on EX Mode.
Perfectly parry both KEM-N0 and DM-ET1L's rhythm parry attack.
Finally get your hands on that gift basket.
Read all messages from the developers.
Defeat the main game final boss wearing the "Low Budget" Costume for Chai (with guitar) and 808.