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