Hey! I started with the questing system yesterday. Basic killing quests are already working. The quest texts are generated randomly from a set of phrases (both English and German is supported at the moment).
Each quest giver will send you to a questing region which is also highlighted on the minimap. The quest progress is displayed on the right side below the minimap.
Right now you get just XP for completing a quest. In the future you will also get rewards like weapons, items or money. Next I will implement quest lines and more complex quests.
Here are some screens showing a complete quest: