So, I lost my streak today, and it makes my 3 out of 4 losses at this same location, the Shifting Passages.
Once, I lost after killing all bosses, was mopping up lower level creeps but got stuck when spawned walls closed me in (I was partly to be blamed also since there were many stoned plants, was under EM).
Another time, I lost as Rat Monarch.
Today, I lost, I was at level 3, and stuck between a level 7 Changeling and the Matron boss, closed in after a kill, no other way to get out.
Maybe, I was in a rush, since there's not much time left (and I wasn't looking at the big picture of the walls spawning), but then again it could just be bad luck.
Just had to rant, guess I have to start all over again, thought I could go further.