Here is the full list of all 41 SoulCraft achievements.
Learn 10 Skills
Consume 30 Potions
Defeat the Broodmother
Kill 500 Enemies
Learn 5 Skills
Win an Insane Difficulty Quest
Win a Very Hard Difficulty Quest without using a Potion or Revive
Reach Level 10
Defeat Shakkur the Assassin
Win a Very Hard Difficulty Quest
Make an enemy die in a Toxic Pool
Revive your Character
Purchase a Mystery Chest
Equip an Item in every Slot
Equip a Character Skin
Win a Hard Difficulty Quest
Win a Hard Difficulty Quest without using a Potion or Revive
Defeat Pyron the Destroyer
Kill 100 Enemies
Defeat Toxurr the Chemist
Defeat Morrus the Butcher
Reach Level 5
Learn a new Skill
Craft an Item
Defeat your first wave of enemies
Adopt a Pet Companion
Reach Level 20
Reach Level 35
Reach Level 50
Collect 100.000 Souls
Collect 500.000 Souls
Collect 1.000.000 Souls
Kill 1000 Enemies
Collect 200 Essences
Equip an Item of Rare (blue) quality in every Slot
Equip an Item of Legendary (yellow) quality in every Slot
Learn 20 Skills
Defeat Earthshaker Lyrruth
Defeat Shruthar the Deceiver
Win an Insane Difficulty Quest without using a Potion or Revive
Let an enemy die in a Snapper Explosion