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