This map was a collaboration between a bunch of people, I was the one who was tasked with art passing the map. The map was made for the TF2 Invasion Update (https://www.teamfortress.com/invasion/) It is offically in the game thanks to Valve.
The map is set in a coastal european town, we used Dishonored and real life locations as reference.
The map was set around a new gamemode made by the community called Player Destruction.