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