Sudden Missions are random quests that pop up randomly while a player is logged in.
You can get various rewards from these sudden missions including EXP as well as other Spell Traces, Inventory Slot, Expansion Coupons, level appropriate equipment, cubes, mileage and mesos.
These missions may include hunting a certain number of monsters, achieving a specific amount of combos or multi-kills, activating runes, or even defeating Elite Monsters or Bosses.
You can complete 3 Sudden Missions daily.
You have 1 minute to claim the reward after completing the sudden mission. Make sure you have slots in your inventory!