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