The Interlude expansion offers a variety of new challenges to players, including the new Primeval Isle, which is home to many new creatures making their first appearance in Lineage II. These include Wild Striders, Pachycephalosaurus and the deadly and powerful Tyrannosaurus Rex. Primeval Isle is a lush and beautiful zone, but in the tradition of Lineage II, offers tough tests and is not a zone for those unwilling to take on great challenges. Mastering the beasts on Primeval Isle will require strategy and teamwork from players and clan members.
Enhanced single-player elements such as the new dueling system will enable players to challenge friends to one-on-one fights or party-versus-party battles. By dueling, players can understand the nuances of their character better than they ever have before. In addition, there are no penalties for defeat in Lineage II’s dueling system, so players are free to let loose and test their mettle.
Also available for mid to high-level players are more than 150 new bonuses to enhance and customize weapons. Lower level players can take advantage of the new Shadow Weapons, a “try before you buy” service offered by the village weapon vendors. This new feature makes weapon selection more effective and simple.
Details of Interlude can be found Here
http://www.lineage2.com/archive/2007/04 ... ude_3.html