Survival Mode contains several sub-modes. Monster Wave, Tower of Tribulation, Expedition, and World Boss!
Monster Wave is a game mode where you try to kill hordes of monsters---an efficient way to farm gold!
Tower of Tribulation is a fight up level after level—you’ll need to boost your CP up considerably far to make it to the highest levels (Good thing the rewards are worth it)
World Boss: Join with other players on the server to slay the massive World Boss! World Bosses swap out every week, landing in the top 50 on the server will earn you amazing rewards!
Expedition mode: Gather your party and set out on an expedition! This auto battle mode is a fast way to get great rewards, and benefits players who level up multiple characters.