Although you can rely solely on your keyboard to move around
in and interact with Unreal's 3-D universe, using both the keyboard
and mouse simultaneously gives you much more fluid and
responsive control.
When you use the mouse to control your rotational movement and
aiming, you gain a degree of precision and speed that players using
keyboard-only controls can't touch. The keyboard is best used for
Note: Some of the doors and lifts in the game are automatically
activated when they detect your motion or body heat as you
approach them. If you have trouble activating one of these
sensor-controlled devices, move back to reset the sensor and
approach the door or lift again.
Pushing Things
To push objects, buttons, switches and levers, run straight into
the object you want to interact with. If the object can be moved
or interacted with, this will take place automatically.