Here is the full list of all 52 HunterX achievements.
Defeat 18 types of bosses without taking any damage.
Remove all equipment and defeat a monster.
Defeat a specific boss.
Complete the monsters in your Archive.
Explore every map.
Solve the special puzzle of the Flame Dragon Temple.
Defeat the Witch in battle.
Obtain 22 types of Occult.
Acquire the Priestess' Curved Blade.
Defeat 10 types of bosses without taking any damage.
Successfully enhance 1 type of weapon to max level.
Successfully enhance a weapon.
Defeat the Blacksmith in battle.
Parry an enemy's bullet.
Solve the special puzzle of the Born Tower.
Solve the special puzzle of Castle: Upper Floor.
Parry an enemy's physical attack.
Solve the special puzzle of Castle: Lower Floor.
Obtain 15 types of Occult.
Acquire the Icy Beam.
Acquire the Spirit Sword.
Reach level 50.
Defeat 5 types of bosses without taking any damage.
Acquire the Flame Halberd.
Acquire the Acid Dragon.
Resurrect after being killed by a Debuff.
Defeat a boss without taking any damage.
Acquire the Spider Saliva.
Obtain 5 types of Occult.
Defeat the Priestess in battle.
Solve the special puzzle of Battle Ruins.
Obtain Occult.
Penetrate an enemy with Shadow Dash.
Retrieve Karma.
Resurrect after being killed by a monster.
Reach the next level.
Destroy an enemy's bullet.
Reach level 100.
Reach level 199.
Successfully enhance an Occult.
Successfully enhance 1 type of Occult to max level.
Remove debuff.
Resurrect after getting caught in a trap.
Complete the items in your Archive.
Acquire all skills.
Destroy 666 Karma Crystals on the map.