We all know one. A fight where you are just in a bad position in one way or another. What do you think is the worse?
For example(s):
-A fight where all the range DPS have to stand so close to the boss that its in the Hunters Deadzone or they die and you are forced to melee and spam traps on the ground in bitter hope of keeping up.
-A fight where your pet just gets eaten because it exists and you are forced to concider resing half the fight, or just keep shooting.
-So on, so on.