Here is the full list of all 29 Dark and Light achievements.
Slay your first creature.
Slay 100 creatures with a single character.
Reach Player Level 20.
Reach Player Level 40.
Reach Player Level 60.
Complete the "New World" quest chain.
Complete the "Call of Adventure" quest chain.
Complete the "City Dweller" quest chain.
Craft your first magic staff and spell.
Place 10 straw dwelling structures with a single character.
Tame your first creature.
Craft fur from a tamed sheep.
Create or Join a House.
Craft a House War Flag
Craft 1,000 items with a single character.
Transform yourself into a beast.
Slay an Infernus Dragon or Frost Dragon.
Craft fur from a golden sheep.
Tame a Griffin, Unicorn or Nidhog.
Donate gold coins to vendors to reach Vagabond I status.
Donate gold coins to vendors to reach Aristocrat V status.
Complete all Building Mastery quests.
Complete all Hunting Mastery quests.
Complete all Homestead Mastery quests.
Complete all Smithing Mastery quests.
Complete all Magic Mastery quests.
Complete all Combat Mastery quests.
Kill another player.
Slay 50 players with a single character.