Here is the full list of all 20 The Curse of Feldar Vale achievements.
Kill 5 Goblins
Kill 10 Goblins
Kill 15 Goblins
Accumulate 500 Qaedi
Accumulate 1000 Qaedi
Accumulate 5000 Qaedi
Level Up 1 Party Member
Level Up 3 Party Members
Charm an Enemy
Kill 1 Unit with a Spell
Kill 3 Units with Spells
Buy 60 Supplies
Turn or Destroy 5 Undead
Turn or Destroy 10 Undead
Find 5 Secret Doors
Conduct 5 Sneak Attacks
Disarm a Trap
Kill 3 Units with Throwing Weapons
Cast a Third Level Spell
Purchase a Blessing at Velarin