Here is the full list of all 29 Spellstone achievements.
Upgrade cards 100 times.
Collect a total of 500 Arcane Dust from Vaporized cards.
Complete the 'Eater of Rock' campaign.
Complete 'The Void Core' campaign.
Complete the 'Swamp Lands' campaign.
Upgrade cards 30 times.
Obtain Bounty Rank 5.
Create a Quad Fusion.
Complete the 'Void's Ambush' campaign.
Complete the 'Karthos, Lair of Chaos' campaign.
Collect a total of 50 Arcane Dust from Vaporized cards.
Create a Duo Fusion.
Complete the 'Castle on the Rocks' campaign.
Complete 'The City of Luminis' campaign.
Upgrade cards 5 times.
Obtain Bounty Rank 2.
Complete the 'Source of Chaos' campaign.
Complete the 'Chaos Contagion' campaign.
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 50 Mastery Stars
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.