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Defeat the Dastardlies
Defeat at least six bosses.
Defeat the Dastardlies requires defeating at least six bosses across a six-week time-gated schedule, with new bosses unlocking each week.
Defeat Week 1 Bosses
Four bosses are available in Week 1: Glubtok, Baron Silvermaine, Lord Walden, and Watchkeeper Gargolmar. Enter each of their respective dungeons and defeat them to begin progress.
Defeat Week 2 Boss
In Week 2, Hydromancer Thespia becomes available. Enter her dungeon and defeat her to add to your total boss count.
Defeat Week 3 Bosses
In Week 3, Mekgineer Steamrigger and Rattlegore are added. Defeat both to continue progressing toward the six-boss requirement.
Reach Six Boss Threshold
By defeating the bosses available through Week 3, you will have access to enough bosses to meet or exceed the six-boss requirement. Additional bosses — Foe Reaper 5000 in Week 4, Chrono-Lord Epoch in Week 5, and Broggok in Week 6 — also count toward the total.
Tips
This achievement is time-gated across six weekly resets, with only four bosses available at launch and one new boss added each subsequent week. You can complete it as early as the end of Week 3 if you defeat all available bosses.