Bunker is one of the game modes along with Campaign, Arena, and Expedition. A group of heroes explores the mysterious underground structure floor by floor and receives rewards for successful completion. There are 600 floors in the Bunker. Their number will increase as the game is updated.
The floors of the Bunker fall in one of the two categories: easy or hard. Easy ones play out without restrictions, and hard ones add conditions. For example, only a Specialist and a Sniper or a representative of the ‘Home Guard’ faction can pass a floor.
The number of rewards depends on the level — difficult floors involve obtaining fragments of a rare hero, and simple floors — an unusual hero. Aside from that, in the Bunker, you can find a good amount of vaccines.
What to do if you can’t pass a floor?
If only one hero is permitted to enter the floor, choose the one who is better at clearing large groups of enemies. The hero needs to be leveled up until he becomes equal in strength to a group of opponents. This may take some time, so be patient. For these floors, the survivor will receive a larger reward.
Pay attention to the logic by which the completion info is built. When you view walkthrough records against a floor, it shows the last players who visited the Bunker, not the team that cleared the selected floor. These are general statistics.