Here is the full list of all 46 The King of Fighters XIII Steam Edition achievements.
Be challenged by "Billy" and win in ARCADE
Get 10 straight wins (Arcade, Versus)
Get 5 consecutive wins in a ranked match
Win 25 [ranked matches / player matches]
Hit 100 times using Special Moves (Arcade, Versus)
Defeat 3 characters in Survival mode
Clear Time Attack mode for the first time
Create 10 characters in Customize
Get 2 consecutive wins in a ranked match
Perform 10 Target Actions (Arcade)
Create 10 rooms
Get an S at the victory screen
Clear STORY.
Register an icon, team and message in Customize
Win 5 [ranked matches / player matches]
Win your first [ranked match / player match]
Complete the tutorial
Play your first [ranked match / player match]
Complete STORY.
Perform 300 Target Actions (Arcade)
Hit 100 times using EX Special Moves (Arcade, Versus)
Hit 100 times using Super Special Moves (Arcade, Versus)
Hit 100 times using EX Super Special Moves (Arcade, Versus)
Hit 100 times using NEO MAX Super Special Moves (Arcade, Versus)
Perform 10 Perfect Victories (Arcade, Versus)
Perform 50 Super Special Moves Finishes (Arcade, Versus)
Get 50 NEO MAX Super Special Moves Finishes (Arcade, Versus)
Perform 50 Drive Cancels (Arcade, Versus)
Perform 50 Super Cancels (Arcade, Versus)
Perform 50 HD Cancels (Arcade, Versus)
Perform 50 MAX Cancels (Arcade, Versus)
Get an SS at the victory screen
Be challenged by "Saiki" and win in ARCADE
Be challenged by "Ash" and win in ARCADE
Clear ARCADE MODE without continuing
Clear ARCADE MODE on VERY HARD
Clear Time Attack mode with 30 characters
Defeat 35 characters in Survival mode
Complete all trials for 1 character in Trial mode
Clear 200 trials in Trial mode
Play 50 [ranked matches / player matches]
Play 100 [ranked matches / player matches]
Play 300 [ranked matches / player matches]
Win 50 [ranked matches / player matches]
Win 100 [ranked matches / player matches]
Get 10 consecutive wins in a ranked match