Challenge Mission A special form of mission that is not part of the main story, in which parties aim to reach a high score. Unlike other forms of PvE play, Challenge Missions can theoretically go on forever, with the difficulty increasing the longer the player or party manages to stay alive. Competitive gameplay Player versus Player (PvP) combat in Guild Wars is consensual and team-based. Such combat is restricted to special PvP areas, the majority of which are located on the core area known as The Battle Isles. Individual campaigns also have certain campaign-specific PvP arenas. Players may participate in PvP combat with either their role-playing characters or with characters created specifically for PvP. Characters are rewarded with experience points for victories in competitive battle and the player account also acquires faction points redeemable for in-game rewards. In addition to this victory may also award points which contribute towards completion of character or account based titles. The following are the competitive modes in Guild Wars: Random Arena Four-on-four matches with teams randomly composed from those waiting to enter combat. There are many different arenas with different victory conditions: deathmatch and kill-count. Team Arena The Team Arenas were PvP arenas where two groups of four organized players battle each other. Groups were formed in the eponymous outpost and Random Arenas teams with 10 consecutive wins automatically enter the Team Arenas. Both Balthazar faction and Gladiator points could be obtained from Team Arenas. Team Arenas was replaced with Codex Arena in 2009. Codex Arena Four-on-four matches with player-managed teams. These matches are played in the same areas as the Random Arena with a few exceptions. Each class has a pool of limited amounts of skills to choose from and this pool changes every 6 hours. Heroes' Ascent A continuous tournament where players form teams of eight to battle in a sequence of arenas, culminating in the Hall of Heroes whose results are broadcast to all online players in addition to rewarding the victors with high-end loot. Arenas in the Heroes' Ascent tournament include deathmatch, altar-control, and capture-the-relic victory conditions. Victories in the Heroes' Ascent award players with fame points that can be used to determine the rank of the player. Guild Battles Two guilds meet in guild halls and stage a tactical battle with the aim of killing the opposing Guild Lord, a well-protected NPC. Victory in guild battles affects the rank