Here is the full list of all 59 Stoneshard achievements.
Die in Permadeath Mode.
Unlock and learn every Sword ability.
Unlock and learn every Axe ability.
Unlock and learn every Dagger ability.
Unlock and learn every Mace ability.
Unlock and learn every Spear ability.
Unlock and learn every Two-Handed Sword ability.
Unlock and learn every Two-Handed Axe ability.
Unlock and learn every Two-Handed Mace ability.
Unlock and learn every Shield ability.
Unlock and learn every Ranged Weapon ability.
Unlock and learn every Staff ability.
Unlock and learn every Dual Wielding ability.
Unlock and learn every Athletics ability.
Unlock and learn every Combat Mastery ability.
Kill the Ancient Troll.
Achieve Respect with Osbrook.
Achieve Respect with Mannshire.
Kill a bear with a level one character.
Bring the Boar Head to Brukk.
Fulfill a contract.
Have 7 enemies on fire at the same time.
Kill an enemy with a melee attack while both your arms are Severely Injured.
Pressure the Mannshire elder into paying you for the old contract.
Arrive in Brynn.
Have leeches applied on six Injured body parts at the same time.
Complete the tutorial.
Kill the Ascended Archon.
Die during the tutorial.
Kill the Ascended Archon without letting him eat a single corpse.
Survive at 1 HP and then restore your Health to at least fifty percent.
Kill an enemy during the effect of Bad Trip.
Complete the Prologue.
Experience 4 Deadly effects at the same time.
Destroy a quest item.
Have 5 enemies fleeing from you at the same time.
Kill the Ancient Troll with a shovel.
Fulfill 15 contracts in a single playthrough.
Fulfill 30 contracts in a single playthrough.
Unlock and learn every Pyromancy ability.
Unlock and learn every Geomancy ability.
Achieve Respect with the Rotten Willow Inn.
Unlock and learn every Survival ability.
Unlock and learn every Armored Combat ability.