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