Here is the full list of all 50 Risen achievements.
2000 monsters killed
"The fourth seal of rune magic" completed
100 locks picked
All crystals learned
Find Helmar's murderer completed
250 quests completed
"The test of Master Ignatius" completed
Caught by the tideworm 10 times
300,000 gold coins obtained
100 weapons forged
"Pease and order" completed
50 pockets picked
Every close combat talent learned
"Defeat the Titan!" completed
"The Inquisitor is dead!" completed
"Find all the teleport stones" completed
100,000 gold coins obtained
100% achieved in three attributes
100% achieved in an attribute
"Find all the vassal rings" completed
"The Titan trap" completed
"Secure the volcano keep" completed
"Esteban's return to Harbour Town" completed
Every ranged combat talent learned
Every Crafting profession learned
20 tool bags collected in inventory
"Where is Patty?" completed
10 treasures found
25 Jest spells used
Rescued the orge, Drok
"The legend of the Gyrger" completed
"The mystery of the eastern temple" completed
500 monsters killed
"The sons of Tilda" completed
"A package for the Don" completed
The farmer's sick wife completed
"Medicine for everyone" completed
"Woman beater" completed
"Power struggle" completed
1000 gold coins obtained
Fell to death 3 times
Found first bow
20 wild boars killed
Seven grave moths killed
10 grain plants collected
20 chickens killed
"Rescue Sara from the wilderbess" completed
Found first map in the game
Found way out of the first ruin
First monster killed