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