Here is the full list of all 85 KurtzPel achievements.
Achieve Chaser A Rank
Use Burst Shot with Elemental Buster 10 Times
Become Soulmates with Ethan Soulguard
Become Soulmates with Jin Kaien
Become Soulmates with Lire Eryuell
Win 10 Consecutive Times in Battle Mission
Use Chase Attack After Lift & Combo or Retaliation 10 Times
Obtain 100 Flags in Battle Mission
Use Chase Attack After Lift & Shoot or Cover Fire 10 Times
Win with 80% or More Damage Contribution in Battle Mission
Win with 70% or More Break and Damage Contribution in Battle Mission
Use Aimed (Charge) Shot with Longbow 10 Times
Use Multi-Shot with Longbow 10 Times
Use Chase Attack After Rising Swing or Rush Attack 10 Times
Use Charged Lightning with Staff 10 Times
Become Soulmates with Lime Serenity
Use Combo Charged Blow with Gauntlet 10 Times
Become Soulmates with Kien Astrea
Complete Monster Mission at Max Difficulty 30 Times
Become Soulmates with Crim Plie
Use Chase Attack After Upper Slash or Rush Upper Slash 10 Times
Win 100 Times in Battle Mission
Achieve Max Level with Blazing Fist
Play Monster Mission in a Party 10 Times
Use Multi-Fist with Gauntlet 10 Times
Use Chase Attack After Energy Blast or Rush & Kick 10 Times
Achieve Chaser B Rank
Achieve Max Level with Dual Soul
Achieve Max Level with Sacred Guardian.
Use Frost Nova with Staff 10 Times
Use Charge Attack Ⅳ with Giant Hammer 10 Times
Use Multi-Stab Attack with Dual Sword 10 Times
Become Soulmates with Marian Vendor
Use Chain Swing Attack with Giant Hammer 10 Times
Use Moon Slash with Dual Sword 10 Times
Become Someone She's Met Before with Lime Serenity
Become Someone He's Met Before with Kien Astrea
Complete Monster Mission at Max Difficulty 10 Times
Have Chaser Rank Decreased
Use Flame Wheel with Staff 10 Times
Complete Monster Mission at Max Difficulty Without Being Knocked Out
Play Battle Mission in a Party 10 Times
Play Monster Mission in a Party 1 Time
Achieve Chaser C Rank
K.O. 100 Enemies in Battle Mission
Play Battle Mission in a Party 1 Time
Win 30 Times in Battle Mission
Achieve Max Level with Diabolic Witch
Become Someone He's Met Before with Jin Kaien
Become Someone She's Met Before with Marian Vendor
Complete Monster Mission at Max Difficulty 1 Time
Complete Monster Mission at Max Difficulty Without Getting Hit
Win with 80% or More Break Contribution in Battle Mission
Win Without Getting K.O. Once in Battle Mission
Complete Monster Mission 100 Times
Use Multi-Fireball with Staff 10 Times
Become Soulmates with Ensher Renhart
Achieve Max Level with Sword Taliah
Achieve Max Level with Dance of Wind
Modify Equipment 10 times
Use Special Attack (Break) at Max Charge with Great Sword 10 Times
Lose 3 Consecutive Times in Battle Mission
Use Chase Attack After Lift or Rush 10 Times
Modify Equipment 1 time
Complete Monster Mission 30 Times
Complete Monster Mission 10 Times
Achieve Chaser D Rank
Win 10 Times in Battle Mission
Achieve Your First Loss in Battle Mission
Complete Monster Mission Without Being Knocked Out
Win 3 Consecutive Times in Battle Mission
Obtain 1 Flag in Battle Mission
Use Spin Attack with Great Sword 10 Times
Achieve Your First Victory in Battle Mission
Win Without Getting Hit Once in Battle Mission
K.O. 1 Enemy in Battle Mission
Complete Monster Mission 1 Time
Complete Monster Mission Without Getting Hit
Become Someone He's Met Before with Ethan Soulguard
Become Someone She's Met Before with Lire Eryuell
Achieve Your First Draw in Battle Mission
During the Event Period, Win 15 PVP Matches [Includes both Official and Practice Probatio]
During the Event Period, Complete 30 PVE Missions
Use Chase Attack After Lift or Charge 10 Times
Use Rapid Shot with Elemental Buster 10 Times