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