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