After a catastrophe at the chemical plant, all the chemicals leached into the sewerage system. The plant was repaired and nothing unusual happened in the first year.
But then the rats disappeared, followed by cats and dogs. No one paid much attention as they continued to vanish. But now people have begun to disappear!
After consulting with experts, it was decided to go down the drain and see what's going on. The task fell on you, so grab your flashlight and get down there. The stench makes you dizzy, and unfortunately it didn't dawn on you to take your gas mask.
You're falling down, groping for the flashlight in your pocket. Include. A terrible shadow appears in the light and it's not a rat or even a dog. It's something very big and terrible.
You can't climb up as the ladder is out of reach. Thankfully, after the explosion of the plant, a warehouse with a weapons cache fell into the basement. But where is it?
You need to find the weapons quickly and hold out until the rescue operation commences.

Control keys:
0,1,2,3,4,5,6,7,8,9 - Change of weapon
WASD - Character movement
SPACEBAR - Jump
SHIFT - Sprint
Esc - Exit the menu
LMB - Shoot
RMB - Aim