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To the Light

In this mode you have to fight with a huge number of combines inside a large complex that goes dozens of floors down. The main task is to go up to the upper floor and turn on the pumps.

Estimated walkthrough time: 20 min.
It is recommended to disable all mods!

• Singleplayer
  
• Multiplayer (recommended up to 4 players inclusive)
  
• Combine
  
• Dynamic difficulty
  
• Statistics
  
• Shooter
  
• Fun
  
• Easter eggs
  
• G-man
  
• Horror
  
• HDR/LDR
  
• Map
  
• Gamemode
  
• Shelter
  
• Left 4 dead

Combines have suddenly invaded the world. With great speed they swept away everything in their path and in a few days captured 90% of the land. Attempts to negotiate ended in failure. But experience has shown that helicopters and striders represent the main firepower. Based on this the remaining government decided to hide the civilian population deep underground namely in the old but not yet abandoned Zarya complex where striders would not be able to pass and helicopters can't fly. As soon as all the remaining people got into this gigantic complex orders were given to close and force all entrances and exits as well as move all people to the lowest floors.
Contrary to the opinion of many the combines did not have ultra-advanced technology and therefore did not have advanced detection systems. This was exactly what they were counting on when they decided to take refuge in the "Zarya": The blocked entrances would hold up the combines while all the survivors went down. When the combines pass through the rubble they will meet several dozen rebels with weapons. Of course the combines will win this battle then they will start looking for other people but when they come across the collapsed stairs they will think that there is no one else left and will leave the lower part of the complex alone. This extremely unreliable plan was invented in a hurry - literally in 30 seconds. No one could guarantee that the combines would not check the lower floors or let poison gas out.
The plan worked but not quite as planned: first, the combines on the upper floors decided to establish a base and therefore the lower floors needed to be quiet. Second, it was not possible to get to the lowest floors because the day before there was an accident in the complex: on the -25th floor a huge long-term rusty tank with chemicals cracked and all its contents spilled out. Breathing and not fainting next to these chemicals is possible only in a gas mask but these very chemicals cut off access to gas masks. So all floors below -22 were unsuitable for survival.
At first it was difficult to get used to living underground: there were frequent riots. But after a month everyone calmed down. However a new problem emerged: Some people started calling themselves "Daredevils" and trying to infiltrate the upper floors. The local police did their best to thwart all such attempts but some managed to escape. They did not realize that by doing so they were not only putting themselves at risk.
And so it happened, the combines began to actively attack, and every day the resistance lost a floor and several dozen people, and initially there were no more than 1000 survivors.
...The combines took the -20th floor, the survivors on the -22nd floor were feeling unwell due to the chemical fumes, and the command instructed you to get to the upper floors by any means and manually turn on the pumps to get rid of the chemicals and their vapors.
You climbed up to the -20th floor without much difficulty. Now you have to break through the onslaught of combines and break through to the surface...

To be continued...

If after death the combine leaves a corpse for which the player can stumble, then you need to do the following:
1) change the gamemode to Sandbox and go to some map.
2) hold down "q" and open the "NPCs" context menu in the upper left corner.
3) remove the checkmark "keep corpses".
4) done!