Raids are multi-part battles that you and your friends can participate in. Click on the "Call to Arms" button to gather your friends to join in on the raids. In some cases performing a Call to Arms will summon a Siege Weapon to help defeat your adversaries.
The Raid party must defeat all enemies or complete all objectives at a checkpoint (e.g. Deathrune Fortress, Death Gates, etc.) before advancing to the next checkpoint. The number of adversaries remaining at a checkpoint is displayed within the mini-map. When all checkpoints have been completed, you will be victorious!'),