As a crew member you win the round by leaving the map without the Mimic being in your party.
SECURITY ACCESS
As a crew member you begin the round with level 1 security access; limiting your movement around the ship. Find security cards and upgrade your security access at a security terminal.
COMPLETE OBJECTIVES
To leave the map you must complete objectives with your fellow players. Once complete, the exit will be available. Some objectives are easier to complete when working with a friend.