Reportedly taken from the Lodestone (can't get there at work to check) in response to complaints about the mob animation in the newest video.
Greetings!
In regards to all of the comments about how the enemies visibly react to player attacks, we'll be adjusting these animations around the time the Beta Test begins.
Specifically we are looking into addressing it in the following ways:
Vary the damage animation according to the amount of damage inflicted.
Tone down the damage animation for large monsters.
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