Dwarf Complete is an adventure online puzzle game that features dwarfs from the Lineage II game, and On claims it will pose quite a challenge for you. So, get your collaborative skills in order and help each other out in the comments.
The goal of the game is to advance through all the rooms of the dungeon, collecting items, weapons and armor along the way. With each item found, a door opens somewhere within the dungeon. Use a combination of arrow keys and clicking to use items and solve puzzles.
The game features On's characteristically charming graphics, a wonderful soundtrack, and it has an auto-save feature so you can play it casually, step-by-step in your free time. Click.