This quest is located entirely in the Industrial Port area of the game.
When you arrive there, you will immediately be attacked. Defeat these enemies and move left or west. There will be a wounded soldier with an exclamation mark above his head. Talking to this soldier begins the quest.
You will need to travel slightly down or south, and then right or east. Defeat the enemies along the way and there will be a lighthouse you will need to light to signal the shipment.
After you have done that, head directly left or west across a series of bridges and islands until you reach a wooden staircase and platform with Anton on it. Talking to him will spawn two waves of enemies.
Defeat these enemies, talk to Anton again, and the quest will be completed.