Here is the full list of all 26 The Incredible Adventures of Van Helsing achievements worth 1,000 gamerscore.
You have solved every side quest in Markovna.
You have looted 100 chests.
You have visited an Ink location.
You have killed 500 enemies.
You have looted 50 chests.
You have escorted the Traveling Merchant to the Romany Camp without him taking any damage.
You have visited 3 different locations.
You have killed a chicken with a sword.
You have gained entrance to the village of Markovna with the help of Lady Katarina.
You have killed 50 enemies.
Kill 5000 enemies.
Visit all locations.
Loot 200 chests.
Visit 7 Ink locations.
Complete the Start the Generator quest.
Complete the Weapon Shipment quest.
Complete the Orichalcum Shipment quest.
Let Lady Katarina kill a Boss.
Swim through 20 garbage containers.
Solve every side quest in the Secret Lair.
Defend the Secret Lair without a single enemy getting in.
Finish the Salvage Mission quest without setting off any explosives.
Eliminate Fulmigati's Doomsday Machine.
Answer all the Riddle Wisps correctly (so you don't have to fight them).
Take 20 pieces of loot from the Domovoy on the Gorgon Pass.
Finish the game with a Hardcore character.