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