Here is the full list of all 29 Spellstone achievements.
Complete the 'Swamp Lands' campaign.
Complete 'The Void Core' campaign.
Collect a total of 50 Mastery Stars
Create a Duo Fusion.
Create a Quad Fusion.
Complete the 'Eater of Rock' campaign.
Upgrade cards 100 times.
Complete the 'Void's Ambush' campaign.
Obtain Bounty Rank 5.
Collect a total of 500 Arcane Dust from Vaporized cards.
Complete the 'Karthos, Lair of Chaos' campaign.
Complete the 'Castle on the Rocks' campaign.
Collect a total of 50 Arcane Dust from Vaporized cards.
Upgrade cards 30 times.
Complete 'The City of Luminis' campaign.
Complete the 'Chaos Contagion' campaign.
Obtain Bounty Rank 2.
Complete the 'Source of Chaos' campaign.
Upgrade cards 5 times.
Successfully craft a Rare Rune.
Successfully craft 10 Rare Runes.
Successfully craft an Epic Rune.
Successfully craft 10 Epic Runes.
Obtain Bounty Rank 10.
Collect a total of 100 Mastery Stars
Collect a total of 200 Mastery Stars
Complete the 'Big Mama' campaign.
Complete the 'Tales from the Swamp' campaign.
Complete the 'Trial by Fire' campaign.