They deserved to get their revenge and have their contribution for defending their homeland.
The two had already tasted how bitter it was for not being able to defend their homes. And thus they retreated alongside their remaining forces to the rear.
They only killed their way through there and then they waited.
Patiently waiting to ambush any retreating forces after their defeat.
"We need live hostages to interrogate," Amera stood shoulder to shoulder with Doaf, "we need to know if there is a possibility for... him to survive."
"He will," Doaf firmly said his belief, "my young master isn't someone to be killed this easily."
Amera wanted to agree with him, or even nod however she couldn't. She knew what Arthur experienced wasn't something easy or trifle to begin with.
However she could only pray... pray for his safety and for him to return to her at the end.