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