To unlock Keys to the city mode,u have to download it from X-Box live.

When you go to the basketball courts on Los Mouertos Island, pick up the basketball, jump on the rock above the court,(over the ocean), drop the ball and kick it.Ta-Da!It is also fun to throw the basketball at gangmembers.I tried it and I got strength XP and got to watch him go flying!

Okay when you start the game go to the Shi Gen area (Island 3) and kill a few gang members eventually you should come across a gang member with a heat seeking rocket launcher, kill him and take it. This will make taking out the first gang much easier as they do not ahve any long range explosives they only have grenades. Also make sure you go to a save point with it so that it is stored there for use whenever you need it.

Hope this helps

Okay on the first island (Los Muertos) drive out of the agency building in any of the agency cars (supercar is usually the easiest to control) and as soon as you get onto the main road there will be quite a few gang members, simply keep running them over and run over nay new gang members that come along. Eventually hit squads will arrive so you will have loads of gang members to hit. Just keep runnig them over and when your car has taken a lot of damage simply go back to the agency garage and replace it. Wash, rinse and repeat. You should be able to max out your driving skill in under an hour this way.

Hope this helps

This achievement was easy the first time I got it
1.Equip your weopons with only exlosives (rocket launchers NOT
grenade launchers)
2.If you downloaded the "Gettin busy" pack, equip your grenade as the
Cloaking device so you can sneak by enemies.
P.S. You don't need to defeat all the enemies to get the achievement
so just go for the boss.
HAPPY GAME PLAYIN!!!

If you have four star driving but bad firearm skill, heres a way to get it up fairly fast.

Step 1. Go to "The Keep"(Agency.)
Step 2. Select the Super Car and go to whatever city you want. (Shai-Yen works best.)
Step 3. Hold down the B button to use the machine-gun turrets, and go nuts!

First off you are going to need the "Firefly" and "Limpet Charge" grenades. Here are the steps...

Step 1. Just kill a civilian (its easier)
Step 2. Throw the limpet charge under them and detonate
Step 3. Lock on to them using the firefly and frequently fire at them to keep them
in mid air

I know that this can be one of the hardest achievements to get. So, I've found a way to get up the firearms skill while doing this easily. Here are the steps...

Step 1. Go to a supply point that is on a tall building
Step 2. For your weapon choices all you need is the "Longshot"
Step 3. Just keep aiming at gang members on rooftops as well as on the ground

If you run out of ammo the supply point is near by and in doing so, re spawns the gang members. If you want me to show you personally just add me on xbox live. "Estabb1n"

The guide for rookies.

1st:Start at the los muretos island,it's the easiest island.

2nd:When you get more experienced try the volk island.(Medium)

3rd:When you are a very skilled agent and know the area try,the shai-gen island.
(Hard)

Hope this helps!

If you want to kill a boss right in front of you use this to help.
1. You have to have a shotgun. (stub is best). 2. Find the boss.
3. Percision lock him or her and press and hold up with the left thumbstick
4. The percision lock is pointing towards the head.
5.fire away.
6. It may take 2-6 shots.

hint by xawsomex player 12
Live gamertag is gamer7520

Play on Xbox Live with someone who has "Keys to the City" and ask to play it. When he quits, go to the main menu within five minutes, then select "Keys to the City".

When you fight a boss spawn a load of exploading barrels and it kills him and you can make a line on explosions

Make Sure You Have The Rocket Launcher That Follows Enemies And The Stand Alone Rocket And Make Sure Ur Agilaty IS A 4Star then get To The Top Of The Building Where Wang Is Then Shoot One Follow Rocket And Get To Th Side Jump On The Side Wall And "QUICKLY"Jump On Or Wang Will Say "TAKE THIS"then He Will Through A Grenade That Will Blow You Of The Side And U Will Get Pissed I Did Then Once You Jumped On The Side And Climbed Up Go To Th Back Than Go To Wang From The Right Side And Kick Him Shot A Rocket At One Of The Soldier Guys Protecting Wang And Make Sure Ur Not Near Them So U Don't Fly OFF And Go Back To The Back of Where U started When U Climbed Chill Next Too The Side Of The Right Side And Wait He Will Come to You Alone No Pressure On You Lucky For You Now For Grand Finally Shoot The Five Follow Rockets But Before That Get The 1 Rocket Standalone Launcher Shoot It At Him He Will Fall Then Shoot The 5 Rocket Follower Launcher
And If He Is Not Dead He will lay There Half Dead And Burning Kick Him Then When He Is Dead Let The Video Go Through The Kill The Three Top Guys SO They No Your 4Real Now Pick Up WANG and Jump High In The Air Go Back And Through Him High In The Air And Say To Your Self I AM KING AND U Feel GOOD Now Go To The Riot Reload Your Guns and Blast Away If You Die Go To The Shai Gen Then Pick The FIRST SUPPLY POINT then Beat It And Another Video Will Apper If U Beat "Los Muatos Volk And If Shai Gen Was Ur Last A Video Will Apper And You Will BE Shocked Well Have Fun.

First off I'm first person ever to find this glitch. Ok first you go to keys to the city and activate god mode or else you'll die it helps to clear the streets as well get in an agency suv (level 4 works best but you can use any level) start driving and once you're at top speed spawn a ramp truck. 3 things can happen 1 you go off the ramp as normal 2 you flying around the map (good time to exicute tricks) 3 you go under the level you will be swiming and if you shoot up your shots will go through the floor and hit what ever is above

On the top of a tower facing the keep in the shi-gen area of pacfic city there is a swimming pool with 2 rubber duck. One on the diving board and one in the deep end of the pool. The tower isn't to far from where you fight Wang the shi-gen leader. The tower also has a billboard that has "The Network" audio visualization sign on it. I guess the game developers have a thing for ducks.

When you reach the 4 star **** agility level for driving your SUV will climb walls. For a short time a least. Have your SUV facing parrallel to a smooth surface wall and hold B your SUV will grab traction into the wall and start driving up it! Just keep holding B.

All you have to do is jump on a group of people and they will get crushed.
Note: You have to have level 3 agility.

First you need to go off the coast of Los Muertos island go out to sea for about ten min. And then go to pause menu go to the main menu section and then click the second to the last option and go to the base presto, your floating above water and then get the supercar and it will be invisable hope it works.
sincerley, Harleyb123

p.s. If it dosent work the first time you didn't go out that far.