This level has plenty of secrets, here is a hint to how to find them :

- The map has a collection of toys you can collect, here are the general locations:
    - Generators
    - Manor
    - Weapon shop
    - Hospital
    - Graveyard
    - River close to the factory
    - Boxes outside the factory
    - Hell
    - Laboratory

- The map has some hidden ammo stashes, there are the general locations:
    - Outside the Laboratory
    - Graveyard
    - Sewers
    - The last two are close to the coffee shop

- In the area where you spawn first, start shooting at the red moon.
- The helicopter at the start of the map has some flames, touch them many times.
- The statues outside the manor can be destroyed.
- In the manor's basement there's a button to open a gate to reach the sewers.
- The oven in the manor's kitchen can be interacted with.
- There are television screens inside some of the buildings, rarely something appears in the screen.
- Pay attention to the computer screen in the manor and the weapon shop.
- Inside the manor there's a corpse sitting, at the bottom there's something special.
- If you go to the manor's sewers an enemy will spawn in a random place which has a special item.
- The level has a sewers section that allows you to connect the manor and factory with the laboratory.
- If you go to the rooftop of the hospital you can jump to the top of the big fence, you can use it as a shortcut to the factory.
- Don't shoot the Nali in the graveyard :)
- Randomly you will notice an airplane in the sky, you can shoot at it.
- In the area close to the river near the factory there's a fire department building with a corpse in a window, please shoot it.
- After a Nali in the graveyard die, the others will spawn somewhere outside the factory.
- Inside the laboratory there's a key that you can use to enter a building close to the coffee shop.
- Outside the city (close to the fire department building) there's something inside the building that is burning.
- The level has three "cheat codes" that allow you to play the map with some advantages. You can activate them by doing some of
  the things mentioned before.

Also, if you play online and you want to disable cheats there's a hidden button in the spawning room, this button only appears when you
play online.