Here is the full list of all 50 One Piece Burning Blood achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
All achievements unlocked
Level up a battle character to max
Complete a poster in the Wanted List "A Queen's Request" in WANTED Versus
Use at least 30 support characters and win the battles
Earn at least 100,000,000 Beli in total
Complete a poster in the Wanted List "After Meal Workout" in WANTED Versus
Complete 50 wanted posters on the Wanted List in WANTED Versus
Complete a poster in the Wanted List "Big Eaters" in WANTED Versus
Complete a poster in the Wanted List "Beauty is Strength" in WANTED Versus
Complete a poster in the Wanted List "The Iron Captain" in WANTED Versus
Complete a poster in the Wanted List "Secret of Youth" in WANTED Versus
Complete a poster in Rayleigh's Training "Pirate King Training" in WANTED Versus
Unlock all support characters
Complete a poster in Rayleigh's Training "New World Training" in WANTED Versus
Perform a total of at least 10 Unity Chains
Perform a total of at least 5 Unity Clashes
Fight an online Player Match
Unlock over half of the support characters
Unlock all battle characters
Complete a poster in the Wanted List "Aiming for Admiral" in WANTED Versus
Use at least 30 battle characters
Complete a battle in every stage
View 50 different appeal events
Complete a poster in the Wanted List "Brave Brigands" in WANTED Versus
Complete all Paramount War chapters
Clear the Paramount War Episode "Ace"
Perform a total of at least 30 Ultimate Attacks
Perform a total of at least 10 Unity Assists
Swapped with partner at least 100 times
Clear the Paramount War Episode "Akainu"
Defeat at least 100 opponents
Complete a Special Wanted Poster in WANTED Versus
Complete a poster in the Wanted List "Mermaid's Surprise" in WANTED Versus
Earn a title
Earn an emblem
Fight an Online Ranked Match
Unlock over half of the battle characters
Clear the Paramount War Episode "Whitebeard"
Complete a poster in the Wanted List "Bride's Training" in WANTED Versus
Complete a poster in Rayleigh's Training "Basic Training" in WANTED Versus
Add 100 entries to the Keyword Log, then view your Collection
Clear the Paramount War Episode "Luffy"
Reach level 5 with any battle character
Unlock all modes
Perform a Grand Impact for the first time
Unlock a battle character
Unlock your first support character
Call out your first support character
Level up a battle character
Complete a Paramount War chapter