Konami has released some new brief gameplay videos for Metal Gear Survive. In the first one, we can see the Walker Gear in action, taking out creatures at a fast pace.
The other video shows mission results and bonuses. Each player is given a clear rank indicating their degree of contribution to the mission. As you can see, the top player receives extra weapons.
In addition, here are some screenshots that Konami has been sharing on their channels over the last few days, showing the Mist World, the Wormhole Digger, and a whole bunch of Wanderers:
Source: Metal Gear Official Twitter, 2, 3, 4