Update Left 4 dead . A survival mode was added (Survival) for a total of 16 missions, including the new Mayak mission from the Last Stand chapter, mainly the missions were cut out from the main chapters of the game, and balanced on the infinite invasion mode. In the new mode, the player needs to hold out as long as possible, and for each mission they give a medal for 5, 7, and 10 minutes of survival. A new Easter egg has been added to the l4d plot basket , in the Mayak mission we see a sunken ship from the 2nd chapter “Funeral chime”, and before that it sailed :(. The cover of the new chapter is drawn, let's say, pathetic. More in the update were 2 missing companies in the battle mode, “Funeral chime” and “Death in the air”