Successfully complete the following levels to unlock the corresponding picture in the gallery.

Attack at Cedarleaf: Cedarleaf
Gemspark: Concept Art
Into the Underdark: Githyanki Outpost
Stand at Mithral Hall: Mithral
The Dragon's Lair: Dragon
The Jungles of Chult: Chult Jungle
The Lord of Chaos: Limbo
The Wizard's Tower: Wizards Tower
The Yuan-Ti Temple: Chult Temple
War in Damara: Battlefield