After 100500+ failed attempts, I did complete x2.25.
I have three fully geared characters (no pri tho), and I was able to clear x2.5 with each of them just last week. Now I can't even clear x2.25 with the two of them (the ones I thought were better?).
I want gnaw on the throat of the person who said ER was going to become easier because FUCK YOU.