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