Here is the full list of all 70 Eterna: Heroes Fall achievements.
Reach level 4
Reach level 13
Reach level 40
Reach level 50
Reach level 60
Clear 2 Areas
Clear 10 Areas
Clear 30 Areas
Reach new 3 locations
Reach new 12 locations
Reach new 100 locations
Disenchant 3 items
Disenchant 50 items
Disenchant 500 items
Open 1 chest with keys
Open 20 chests with keys
Open 100 chests with keys
Craft 3 items
Craft 20 items
Craft 100 items
Finish 3 Work Assignments
Finish 20 Work Assignments
Finish 100 Work Assignments
Deconstruct 2 items
Deconstruct 10 items
Deconstruct 100 items
Complete 1 side quest
Complete 10 side quest
Complete 30 side quest
Complete 1 miscellaneous quest
Complete 10 miscellaneous quest
Complete 100 miscellaneous quest
Heal yourself for 350 points
Heal yourself for 500 points
Heal yourself for 800 points
Deal 300 points of damage
Deal 500 points of damage
Deal 1000 points of damage
Slay 60 enemies
Slay 200 enemies
Slay 1000 enemies
Slay 8 Animals
Slay 50 Animals
Slay 300 Animals
Purge 8 Undead
Purge 50 Undead
Purge 300 Undead
Slay 8 of the elder races
Slay 50 of the elder races
Slay 300 of the elder races
Slay 10 Demons
Slay 50 Demons
Slay 300 Demons
Slay 10 Humes
Slay 50 Humes
Slay 300 Humes
Defeat 1 Greedy Goblins
Defeat 20 Greedy Goblins
Defeat 100 Greedy Goblins
Reach total score of 50000
Reach total score of 500000
Reach total score of 1500000
Duel 1 Person
Duel 10 Person
Duel 100} Person
Play 1 arena match
Play 50 arena matches
Play 300 arena matches
Resurrect 1 time
Resurrect 10 time