The SYNCHRONY Add-on for Crypt of the NecroDancer has 8 achievements.
Complete "All Zones Mode" with solo Chaunter (Synchrony DLC Required)
Complete "All Zones Mode" in under 10 minutes with solo Suzu, or 12 minutes when playing with AMPLIFIED content (Synchrony DLC Required)
Kill a miniboss while possessing one of the same kind as Chaunter (Synchrony DLC Required)
Kill 4 enemies in one swing as Klarinetta (Synchrony DLC Required)
Complete "No-Beat Mode" as Aria
Complete "All Zones Mode" with solo Klarinetta (Synchrony DLC Required)
Complete "All Zones Mode" with solo Suzu (Synchrony DLC Required)
Get captured by a Pawn while trying to leap past its attack (Synchrony DLC Required)