That's probably just 'platforming.' Unless you mean it was an entirely new area with a new name, in which case wtf.
During the fight, a prompt came up to touch a bloodstain, and a ghost-like figure appeared. Is that an online feature?
Bloodstains show you how another real-life player died. Touch them, and you can see how the last 10 seconds or so of their life played out. Useful for avoiding certain situations.
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Black Turtle did a pretty good job.