Skyforge: Beating Tactical Scissor Echo as Berserker Guide
So I believe the Tactical Scissor Echo apart of the latest holiday event is broken. First, the safe zone from old PC videos does not work and second, the timing for certain attacks is woefully glitched out.
So when the minefield attack comes up, continue moving but stay around the blue squares. (Normally you'd just have to make your way to one and you're good, but not here). For some reason you need to enter a blue square after they all stop changing. So if you're in a blue square before the field stops changing, go to another blue square or you're going to take damage.
When the AOE purple attack starts to charge, jump when the time goes from 2 seconds to 1 second. You should avoid the attack, but the animations would suggest otherwise. Again this boss is glitched.
Otherwise continue to perform the same techniques and maneuvers as I do and you should beat this boss that is the hardest of all the event ones.