There are still three achievements/trophies in Plants vs. Zombies: Garden Warfare 2 that require you to beat a boss hunt in the mystery portal. These achievements are now impossible to get, as the Mystery Portal is on a fixed rotation, and none of the Boss Hunts seem to be included in it. EA should inform us of wether or not Boss Hunt is in the rotation, and it isn't, they should make one last update to the game to fix this. It's unfair to new players to have achievements/trophies that are completely impossible to obtain.