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Does anyone know what’s needed to unlock the green key master with liches? I’ve already done everything else, only this remains.
For those interested, here’s how I dealt with the knight who wouldn’t catch up in the dungeon. I lured him out with a level 6 unit during the Week of Equilibrium (which is important!) and defeated him with three low-tier units (1500 archers, 900 zombies, 340 ghosts), using sword walls and fists.