only one objective that matters anyway, to survive.. and ZH1 and 2 already have that one 
True, but ZH-Objectives threw in a few other things for the fun. For example, there was a map that placed you in an underground train station. Your goal was to get on the train and escape after turning on the power and waiting for the train to power up, in which you would have to go through the entire complex and make sure you survived until the train left with everyone who survived on-board. If you didn't get on the train, there was another location within the map that you could use to escape.
