Megalopolis

Megalopolis is the 4th level in the Crossed Worlds campaign. After Newbie and the Female Survivor escaped the Space Station (Campaign) by using a UFO, they come back to Earth. When they land, the local military sees the UFO and thinks whoever is controlling it are aliens, and will try to kill them. So, Newbie has to kill the military soldiers who are there

Enemies
The enemies are Soldiers who carry either Desert Eagles, Secret Forces Rifles, or Armageddons. Each enemy carrying a different weapon has a different colored suit. Enemies carrying Desert Eagles wear yellow suits, enemies carrying Secret Forces Rifles wear green suits, and enemies carrying Armageddons wear grey suits. The soldiers also have jetpacks so they can fly around the level, mostly over gaps between buildings.

Boss
The boss of this level is an armed Military Mech equipped with a jetpack.

Trivia

 * This is the first level where you kill human beings instead of monsters.
 * Its multiplayer map is Parkour City.
 * This is the first level that enemies have instant damage projectile weapons means you cannot dodge to avoid instead hiding behind the wall.
 * Strangely, when the enemy use Secret Forces Rifle to shoot, it actually sounds like desert eagle.