Here is the full list of all 31 Heroes of Loot 2 achievements.
Collect all hero cards for Barbarian
Collect all hero cards for Paladin
Reach player status level 5
Collect all hero cards for Thief
Use the Fire fist weapon
Collect all shard of a magic spell
Reach dungeon 30
Use the Thunder claw weapon
Level up the Wizard to level 5
Use an Afterlife rune
Enter the snow area
Use the Soul sword
Enter the Forest
Level up the Valkyrie to level 5
Complete your first Bestiary info
Defeat a Minotaur
Enter a sewer level
Level up the Warrior to level 5
Level up the Elf to level 5
Find a coin room
Reach dungeon 10
Survive an Arena room
Become level 10 player
Become level 20 player
Complete all quests at least once
Complete your Bestiary
Complete all magic books
Find King Loot's lair
Defeat a Scarab Queen
Collect all hero cards for Mage
Walk on fire