Here is the full list of all 20 Spellweaver achievements.
Collect one copy of each Rage card from Valiant Dawn.
Collect one copy of each Corruption card from Valiant Dawn.
Collect one copy of each Dominion card from Valiant Dawn.
Collect one copy of each Nature card from Valiant Dawn.
Collect one copy of each Wisdom card from Valiant Dawn.
Collect one copy of each Order card from Valiant Dawn.
Complete 5 Epic quests.
Win a game by depleting your opponent's deck.
Win a game after playing at least one card from each aspect.
Reach a rating of 1250 or more points.
Win a game by having 40 or more life.
Complete 5 Spellweaver Trials.
Reach 10 Wins in a Spellweaver Trial.
Win 7 Friendly or Ranked games in a row.
Win a game at 1 life.
Unlock all quest points on the World Map.
Win a game that lasted at least 7 turns, without receiving any damage.
Play 100 games.
Play 20 Ranked games.
Unlock the Spellweaver fame title. (Reach Fame Level 35)