Acts and stages
5 acts of 10 stages each. Stages progress in waves, with an act boss in stage ten. Weekly map changes give stages different tendencies.

Act 1 · Kingdom's Edge
10 stages · Lv 1–10

Act 2 · Burning Sands
10 stages · Lv 11–20

Act 3 · Frostfire Depths
10 stages · Lv 21–30

Act 4 · Stormreach
10 stages · Lv 31–40

Act 5 · The Hollowing
10 stages · Lv 41–50
Step-by-step instructions
Stages
Campaign Map
Select a difficulty, act and stage. The map distinguishes current, cleared, available and locked stages. Read the unlock requirement; choosing a card alone does not start that stage.
More information
Clear the previous stage first
Start
Start sends the party to the selected available stage. Its encounter details show monsters, boss and base chest chance. A locked stage must satisfy its prerequisites first.
Auto-advance
Toggle: repeat this stage or auto-advance
☠ BOSS
The boss is the final encounter of a stage. If the party falls, review gear, skills and formation or repeat an earlier stage. Stronger equipment does not guarantee victory or a chest.
More information
Base chance from normal enemies after the chest waiting period. Weekly effects and personal bonuses are excluded. Bosses and elites use a separate rate.
Auto-retreat to the previous stage after 3 wipes
Weekly Mutation
Weekly Mutation
Open the mutation banner to read this week’s actual effect and remaining time. The effect can change monster stats, waves or rewards. Recheck it when the week changes.
More information
Campaign and PvP descriptions are different. The campaign banner describes stage effects; Arena shows the PvP rule. A listed example is not a permanent bonus to every mode.