Doors

Doors are objects in SAS: Zombie Assault 4. It comes in two different kinds.

Destroyable
Destroyable doors can be opened by shooting at it, and it will have a loot behind it except a door inside lab's entrance to the restroom on mission Vaccine where it will tell you where the vaccine is. They can be walked through by players with movement of +100% or higher, but it will not trigger the loot drop.

Not Destoryable
Not destroyble doors usually block the players' progress. The players have to take an certain action to open the door, but a player with more than +100% movement can walk through it but will not trigger the next part of the mission.