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