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