Here is the full list of all 25 Battle Chef Brigade achievements.
Win a duel without using the theme ingredient
Reach a combo multiplier of 10
Use Thrash's Heavy Attack to smash a monster into 3 others
Beat the game without losing a match
Complete Story Mode on Hard
Complete Story Mode
Cure Ardea
Buy 15 items
Complete all of Belchior's Puzzles
Complete all of Thorn's Hunts
Complete all of Pontida's Jobs
Consume 10 ingredients in one match
Join the Brigade as Mina
Achieve a total round score of 1000 points or more
Make a dish worth 450 points or more
Obtain a sample of Ambrosia
Obtain extra points from a Judge for using any Expertise Tome 5 times
Kill 3 enemies without touching the ground
Stock your pantry with 30 ingredients in one match
Win a round with over 2 minutes remaining on the match clock
Jump on the bed 10 times
Deflect 10 projectiles with a heavy attack
Win the practice match against Thrash
Achieve 10 Daily Cook-Off victories
Reach Brigade Rank 12 in Daily Cook-Off