How to setup controller ?

Controllers should be detected automatically. They can be configured in the settings menu off of the main menu.

Whats the difference between Campaign and Survival Modes ?

In campaign mode the user progresses through levels following a story that is guided by on screen characters.
Survival mode if more arcade like with loot boxes and more instant action.

How can the player load new weapons in the game ?

Apart from those bonus weapons that are picked up the player can double tap the activate key to access the weapons menu. From there they can purchase weapons. This menu is very basic on early levels and more weapons are added as the player progresses through levels

Split screen play ?

Yes after selecting Campaign or Survival modes the player can choose how many players will play.. There is the option for 1 player full screen, or 2 player split screen on the local PC.

What is included in the Game ?

20+ levels of campaign completed
With support for 30 languages
15 level of survival