Breaking Krieg's Armor
Beat the Davy Back Fight 29 times

Crash Rush Boxer
Beat the Davy Back Fight 18 times.

Donut Race
Beat the Davy Back Fight 10 times.

Groggy Ring
Beat 3 events in the Davy Back Fight, and beat the Davy Back Fight 3 times .

Sanji & Zoro voice (Announcing)
You must win 33 times and play Davy Back Fight once.

Snow
You must win the Davy Back Fight 26 times.

The Fix sign
You must beat the Davy Back Fight 34 times.

Different System Voices
You must play the Usopp's Pirates' Challenge and beat all 3 games to unlock a new System Voice.