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