Here is the full list of all 80 Runestone Keeper achievements.
Complete with Merlin on any difficulty
Complete with Balerio on any difficulty
Reach floor 20 without believing in any Gods
Killed by a bomb
It is your day.
Kill 200 monsters in one go
Believe in the Goddess of Benevolence
Unlock Hogg
Collect 1000 coin in one game journey
Complete with Hogg
Interchange life percentage with a monster
Complete with Dellamorey on any difficulty
Complete with Svafa
Complete with Morte on any difficulty
Kill 15 elite monsters in one go
Ahhhhhhhhhhhhhhhhhhh
Unlock Svafa
Complete with Guy
Win against Nightmare Fiend
Killed by a poison trap
Clear all arenas throughout the entire game in Normal mode
Simultaneously sustain erosion, curse, toxin and weakness effect
Kill an Overlord monster
Killed by an Overlord monster
Try heads next time.
Kill all the wizards in a Wizard dungeon
Believe in the Holy Contractor
All attributes tuned to 5
Kill a Screen Block monster
Believe in the God of War
Hero reach level 10
Betray a God
Believe in the Goddess of Magic
Reach one full upgrade
Killed by a spike trap
Die on 1st floor
Forge a runestone
Kill a ranged elite monster
Killed by a monster explosion
Die in an arena
Believe in the Guardian of Rock
Get through a dungeon without killing anything
Who's this little fella?
Obtain a piece of rare equipment
And much more to be spilled!
Believe in a God
Believe in the God of Treasure
Collect your first piece of runestone
Find and clear an arena
Use an altar
Hero reach level 12
Betray two Gods in a row
Having 9 tattoos!
Soul point reach 80
Believe in the God of Vengeance
Believe in the God of Devastation
Believe in the God of Evil
Kill an elite monster while stacked with 40 erosive effect
Be really vital
Be really vigorous
Reach all full upgrades
Kill an elite monster while stacked with 15 weakness effect
Reach floor 21 in Abyss mode
Kill an elite monster while stacked with 20 cursed effect
Reach floor 30 in Endless mode
How dare you...traitor!
Die from the Lich quest
Single strike cause more than 100 damage
Complete with Alexander on any difficulty
Complete with Azir on any difficulty
Activate "Lucky" Runeword and complete on any difficulty
Activate "Conqueror" Runeword and complete on any difficulty
Activate "Tyrant" Runeword and complete on any difficulty
Activate "Pagan" Runeword and complete on any difficulty
Activate "Spell Breaker" Runeword and complete on any difficulty
Activate "Fresh Blood" Runeword and complete on any difficulty
Light the torch in the tutorial
Win against Ancient Memories
Complete with Lilith on any difficulty