How to Level Up Alts Fast

Offline progress is the fastest way to level up alt characters. By parking your alts on your highest stage and closing the game, they earn experience while you're away.

Steps

1. 1Select the last (highest) stage you have unlocked.
2. 2Add all the alts you want to level up to the party.
3. 3Close the game.
4. 4Let offline progress level the alts very fast. Remember that offline progress caps at 8 hours, so come back before then to restart it.