Up on the top of the cliff, Jack was laying still on the ground.
Jack's ambusher who dealt the killing blow was Red Death. She had hidden a distance away while watching the battle between Jack and the three Heavenly Officers. When she thought the opportunity had arrived, she used Vanish to turn invisible and approached. She then used the level 60 skill of her Mad Slayer class, the special class bestowed by the Goddess of Wrath.
This skill was called Phase Kill. It was similar to the assassin's phase strike but much more powerful. Aside from delivering higher damage, it could also be executed from an extremely long range of twenty meters in its first level. If fully maxed, this skill could cover fifty meters in an instant, making her a nightmare for the range classes.
This skill also increased her overall speed during the execution. That's how she was still fast despite Jack's time realm in effect. It also ignored the target's defense by 50%.