Here is the full list of all 20 BREAK ARTS II achievements.
Break for the first time
Start Break Arts for the first time
Play Time Attack once
Play Online Multiplayer once
Make it to Rank 4
Make it to Rank 7
Make it to the highest rank
Spend a total of 1 hour in Machine Design
Spend a total of 10 hours in Machine Design
Spend a total of 30 hours in Machine Design
Spend a total of 99 hours in Machine Design
Create a weapon with single-shot damage of over 10000
Reach a top speed of 500 during a race
Accumulate a total of 250 breaks
Reach #1 in all Unofficial Races(Excluding EXTRA)
Reach #1 in all Grand Prix(Excluding EXTRA)
Reach #1 in all Unofficial Races
Reach #1 in all Grand Prix
???
Complete all titles