Every class should stem from a single building, of which the survivor can only have one of. This building allows them to choose their speciality, by upgrading it into the correct type.
Survivors should be able to change specialities as much as they wish, but never multi-task.
Every specialist should have their own store upgrade, which allows the purchasing of several items unique to their store.
Engineer
Biologist
Poacher
Mechanic
Every class should stem from a single building, of which the survivor can only have one of. This building allows them to choose their speciality, by upgrading it into the correct type.
Survivors should be able to change specialities as much as they wish, but never multi-task.
Every specialist should have their own store upgrade, which allows the purchasing of several items unique to their store.
Engineer
Biologist
Poacher
Mechanic