I have two game modes that I think would be a blast:
Survival of the Fittest
All of the players are monsters. They have to compete for a limited food supply and fight each other. The last monster standing wins.
Assuming the monsters have some kind of hive setup, have the hunters go on an objective based, multiple area mission. For example, the hunters have to break into the hive as their first objective, then they have to kill x NPC monsters, then they kill the eggs, etc. All the while the monster is hunting them.