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