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