Executive Order is the Forge It Anew step where Xanthe's soldiers have taken a shard of Saint Mihai's sword. You track them from a kobold cave to their camp and take it back.
Enter the cave and inspect the highlighted bodies and the painting. Xanthe's soldiers killed the kobolds and left with the shard. Your marker moves to their camp. Kill the soldiers and loot the shard from the main tent.
This is the hardest of the three shards. Some guides suggest level 21 at minimum. Look in the tent for a letter from Xanthe next to the shard.
Image: Rebel Wolves / Bandai NamcoAmbrus's Cellars
Ambrus's Cellars are the court activities where you raid the hidden blood stores of the vampire Ambrus. Each cellar you clear raises his anger, which is how you unlock the duel with him.
Image: Rebel Wolves / Bandai NamcoAmbrus's Cellars: Trouble Brewing
Trouble Brewing is the Ambrus cellar hidden in a guarded house in Svartrau City. Spare the alchemist upstairs and you walk away with a Lasting Malediction Manual and a potent Razor Claw vial.
Ambrus's Cellars: Uninvited
Uninvited is the Ambrus cellar near St. Tyna's Grove, an outpost with ruins below it. It is the toughest of the three cellars because a named murohn guards the blood stock.
Image: Rebel Wolves / Bandai NamcoAmbrus's Dungeons
Ambrus's Dungeons are court activities where you break into Ambrus's prisons and decide what happens to the people inside. They count toward his anger, which unlocks the duel with him.