The roll is a handy maneuver that can be used to throw off enemies aim, avoid fire and can even be used to dodge from cover to cover!

Performing a roll is very simple.  While using auto-aim or using the free-look mode, press the left analog stick left or right while pressing square to roll in the corresponding direction.

Rolling has several advantages.  For example,  rolling from side to side makes Niko extremely difficult to hit, and allows him to avoid the line of fire for a short period of time.  You can also use the roll to dodge behind objects such as pillars or walls, then quickly take cover behind them.

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The cellphone can be a handy tool to cause chaos in Liberty City. For instance, you can call 911 in the free-dial screen of the cellphone to send the Police, Paramedics or even the Fire Department to your location!

To enter free-dial mode simply hit UP on the D-pad twice until you can see the entire number keypad. Dial 9-1-1 and hit the green phone icon to call emergency services. Pressing one will send a Police cruiser to your location (useful if you are on a mission that requires you to steal a police cruiser.) Pressing two will send the paramedics to your location, who will heal you for a fee if you are wounded. Finally, by pressing three on the keypad, emergency services will send a firetruck to your location.

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In GTA IV, you will be confronted by many, many enemies – enemies that are usually as well armed as you. Completing missions depends on how well you use the surrounding area and environment to protect you from gunfire.

Just about any object can be used as cover and Niko will automatically hide behind the closest object simply by pressing R1. For low to the ground objects such as a stack of pipes, running towards the pipes and pressing R1 nearby will cause Niko to slide to the object and immediately take cover behind it.

While hiding behind a wall, or an object you can move from left to right and fire from around corners. Position of your cover is extremely important to remeber as well. The ideal cover is that which allows you to aim at all the enemies in the area, but offers the most difficult target for the enemies to hit. Once you have a position like this all it comes down to is slowly picking off the surrounding enemies so that you may progress.

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Crouching is a valuable skill for surviving in Liberty City.  To make Niko crouch simply press the L3 (left analog) stick down.  By crouching, Niko’s aim is more accurate and allows for more precise shooting.  Crouching also makes Niko a significantly harder target to hit.

In situations where you are required to kill many enemies within a single area, making use of crouch movement to get from cover to cover can greatly reduce the likelihood that you will take damage along the way.  Niko can also perform a “hurried” crouch walk by holding the X button similar to running while standing.

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