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