Controls

Running
The hostile world in Unreal doesn’t afford you a whole lot of
opportunity for leisurely strolling. So, by default, your character
will run (well, trot briskly really) whenever you use your movement
keys. Depending on how you have your controls configured,
you will use the arrow keys or your mouse to move
around. Use the up arrow and down arrows to move forward
and back. Turn left or right using the comma and period keys,
or by moving your mouse in the desired direction.
Walking
In situations where caution, precision, or stealth are required, it
may be to your advantage to tread more cautiously. In these
instances, hold down the assigned walk key to move precisely
and silently.