After grinding for an hour, the Death Knight finally reached low HP.
When this happened, it used a new ability.
Desecration: A field is created at the foot of the caster. All who stand in it have their movement speed reduced by 50% and take 1000 Shadow damage every 2 seconds.
Needless to say, this was an overpowered skill; one tick of the Shadow damage would drop Lu Li past half HP. Fortunately, his reactions were quick and he immediately changed locations when the skill was cast. However, he still had to take at least one tick of the damage.
At 5% HP, the Boss went berserk, releasing skill after skill that left potholes in the ground.
While Lu Li was fighting the Boss, he suddenly stopped attacking and listened attentively. His expression was grave.
There were other people!
He stood up on the tower and looked around the perimeter, spotting a party of a dozen people who were quickly clearing out mobs. It seemed that their goal was to reach the tower as well.