Mastery

Mastery is a game mode similar to Expeditions, except each map has a set of challenges to complete while your gear is capped, creating a much more difficult challenge than Expeditions.

Challenges

Victory: Survive all waves
Perfectionist: Earned all stars in the same attempt
Not Even a Scratch: No cores fall below 90% health
Under Pressure: Finish each combat phase in under 180 seconds
State of Decay: No defenses are repaired
Base Builder: Build only tower type defenses
Master Strategist: No defenses are sold or destroyed
Protect Your Jewels: No Main core(s) fall below 90% health
EMP Active: Build no aura type defenses
Broken Links: Build no node type defenses
Careful Planning: No defenses are destroyed
Immortal: No hero deaths
Equal Opportunity: Don't build more than one of a specific defense
Budget Cuts: No defenses are upgraded
Think Fast: Complete each build phase in under 30 seconds
All Lanes Open: Build no blockade type defenses
Diversity: Complete all phases with 10 or more different defenses

Maps

All maps have the Victory and Perfectionist challenges. They will not be listed in the table below as they are implied.

Dragonfall Castle

Map	Challenges
Ramparts Siege	Not Even a Scratch Under Pressure State of Decay
The Ramparts	Think Fast Goodbye Blue Sky Under Pressure
Assault on Throne Room	Base Builder Master Strategist Protect Your Jewels
The Throne Room	EMP Active Broken Links Careful Planning

Lost Dungeons

Map	Challenges
Unholy Catacombs	Careful Planning Immortal Equal Opportunity
Buried Bastille	Careful Planning Budget Cuts Protect Your Jewels
Molten Citadel	Think Fast Master Strategist Equal Oppurtunity
Crumbled Bulwark	Think fast Master Strategist State of Decay