Here is the full list of all 26 The Incredible Adventures of Van Helsing achievements worth 1,000 gamerscore.
You have answered all the Riddle Wisps correctly.
You have completed the Start the Generator quest.
You have killed 5000 enemies.
You have killed a chicken with a sword.
You have swum through 20 garbage containers.
You have looted 200 chests.
You have looted 100 chests.
You have solved every side quest in Markovna.
You have looted 50 chests.
You let Lady Katarina kill a boss.
You have killed 500 enemies.
You have visited an Ink location.
You have visited 3 different locations.
You have gained entrance to the village of Markovna with the help of Lady Katarina.
You have killed 50 enemies.
Visit all locations.
Visit 7 Ink locations.
Complete the Weapon Shipment quest.
Complete the Orichalcum Shipment quest.
Escort the Traveling Merchant to the Romany Camp with him taking no damage.
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.
Take 20 pieces of loot from the Domovoy on the Gorgon Pass.
Finish the game with a Hardcore character.