Arbiter (and others) oneshot mechanics

It's disgusting. Spend an immodestly large amount of time to collect the fragments
to die from the instant kill mechanic.
1 death due to the fact that the arbiter's skills were not loaded into the cache and his corridor appeared only when he had already killed me.
Subsequent deaths were just as unfair, where it was necessary to be in a circle to avoid instant death, and at this moment he hits there with another skill that also kills with 1 hit.
To be honest, it was the last straw, tired of wasting time in a game where it is not appreciated.