Crusade is a PvE mode (Player versus Environment) where the players battle against artificial intelligence Monsters designed to fight and defeat the players.

>A Dungeon with total of 60 Floors
-Crusade mode is divided into 3 stages: Easy – Medium – Hard. Each stage has 20 Floors
-Every 5th floor features a Mini Boss, and at the final 20th floor is the grand boss monster.
-[Easy] mode starts with Floor 1. There is no rank restriction and with the max. number of players of 2.
-[Medium] mode starts with Floor 21. You must be SFC or higher to enter this mode. Max. number of players allowed is 4.
-[Hard] mode starts with Floor 41. You must be MSG or higher to enter this mode. Max. number of players allowed is 8.
-[Medium], [Hard] modes of Crusade are more complex, but you will receive higher amount of rewards for clearing them.

>Basic Rules
-Just like Prisoners mode, players will be dropping their gears when their HP hits 0, then they will be captured when they lose all of their gears.
-By striking the captured players with basic attack, you will be able to free them. Freed players will regain a small amount of HP.
-If you get knocked out of the map when your HP is low, you will be KO’ed without being captured.
-When you are captured or KO’ed, you can return to life by using a Golden Token.
-Monsters will randomly drop their gear or HP/Gauge potions when they are KO’ed. After you defeat a Mini Boss you gain full HP.
-After you K.O. every monster of a floor, a portal will appear in the center and warp you to the next floor. When you get to the top floor of a stage you will face the Undead Reaper.
-For each round of [Hard] mode, a Reaper will emerge when you fail to clear the round in given time.
-The Reaper will never die and will chase you endlessly. As you get to higher floors the Reaper will get even more powerful.
-The game’s over when every player has been captured or KO’ed.