The object of the game is kill or be killed. It's a fight for survival through
the ranks of the Systems Corp. Mercenaries as well as any other horrors their
rampant genetic experimentation have created. All of the Systems Corp.
Facilities are on lockdown and all of the doors in your path have been locked.
You'll have to fight through the requisite enemies in order to move on. For the
most part Systems Corp. Mercenaries teleport their way to you behind a locked
door. Don't get pinned between them, and don't let them get too close! After
you've killed enough enemies you'll get a message on the bottom of your screen
saying either "New Area Open" or "Exit Open" depending on the area. From here
you can continue to fight or move on to the next area.