This trick will only work in Keys To The City, which is available for download from the Xbox Live Marketplace. Go into Keys To The City and put on all skills at full. Go to the highway, spawn the Agency supercar. Get in it and start driving. The top speed of the Agency Supercar at 4 stars is about 225 mph. Press Select to open up the "Keys To The City" menu while you are driving and scroll to "Change Driving Skill". Press Y to put it back down to 0 stars while you are still driving so the car will downgrade to its original form. The speed of the Agency Supercar will increase to over 375 mph, and possibly 400 mph if you do not hit anything. However, if you stop or increase your driving skill the speed will return to normal. The speed of the Agency Supercar at 0 stars is 156 mph, but, with this trick the top speed can be over 400 mph at 0 stars.

Run and jump your way to a 4-star Agility rating.

Punch, jab, kick, and throw your way to a 4-star Strength rating.

Bomb your way to a 4-star Explosives rating.

Hit your target every time to achieve a 4-star Firearms rating.

Accelerate and slide your way to a 4-star Driving rating.

Shoot and kill 5 gang members in a single jump (while airborne).

Kill 150 gang members with your bare hands (or thrown objects).

Jump from the top of the Agency Tower and land in the water below.

Use explosives to keep a body up in the air for 10 seconds.

Use explosives to keep a car up in the air for seven seconds.

In order to wheelie in a car, find a reasonably fast accelerating car. When you have found this certain car, find a solid wall that will not move & has quite abit of space infront of it. Drive about 20-30yards infront of the wall, then hit the reverse button (LT)& reverse ino the wall behind you. As soon as you hit the wall, your front should lift up a little bit. But as soon as you hit the wall, hold acclerate (RT) & your car will pop into a wheelie. The length of the wheelie depends on the weight, acceleration, space & top speed you have. I would recommend any muscle looking gang car or tuner looking gang car.

Blow up 100 explosive objects in 60 seconds.

Eliminate the Los Muertos, Volk, and Shai-Gen to complete the game. An option will appear at the starting menu that gives you the ability to toggle the respawning enemies in their districts.

Alvarez can be found on the beach behind his sporting complex inside a rocky alcove. While you can certainly attempt to get there via the main entrance, the many guards will not make it easy. A much easier method is to enter the ocean from a nearby beach and swim around to the back of the sporting complex. When you reach the shoreline, run up the beach, take out the enemies ahead, and jump on the rocky structure where Alvarez waits on the other side. From this vantage point, Alvarez will not have anywhere to hide. Toss grenades to not only damage him, but also clear out his henchmen. When it is safe, drop down and finish Alvarez off with melee attacks.

Once in the rear, you will find Guerra in one of two places: beneath the canopy on the balcony or on the bottom floor underneath the balcony. Keep an eye on your mini-map and look for the Boss's mugshot on your HUD to determine where he is. If he is under the canopy, throw a few grenades to get rid of his minions, then charge up and melee Guerra to death. If Guerra is on the bottom floor, it is in your best interest to take down as many of his thugs as you can before approaching. As such, descend the floors slowly, killing all of Jose's lackeys along the way. Use the staircases for cover, or run up to a higher floor if you need to recuperate. Once on the bottom floor, you will find Guerra near a stack of boxes. Since he will likely be surrounded by other gang members, throw a grenade or two to clear most of them out, then go in for the kill.

Martinez is stationed near a radio tower on the rooftop of this blue building, near the Hillside Housing supply point. You can climb to the roof via a ground floor entrance on the east side of the building. There are a few gang members defending it, but it is nothing a few grenades cannot handle. Afterward, climb the staircase and turn left at the top. There are several enemies on the next level. Stand near the top of the staircase so you can retreat back down for cover if needed. The staircase on the right leads to Martinez. If you are lucky, he may walk down himself saving you the trouble. If Martinez does not pay you a visit, just climb that staircase to the top and take him down with whatever means necessary.

At the top of the apartment complex on the southern side of the south island awaits Sanchez. A quick way to reach her is to climb the windows of the blue, western building to reach the top. Thankfully, there are not too many armed guards at the top. She should not pose much of a threat. Due to the rooftop's close quarters, your melee attack can be quite useful. In addition, shoot explosive barrels if Sanchez is anywhere near them to damage her significantly.

Once you have picked something up above your head \"hold A\" to jump as high as you can like normal then when you are at the peak of your jump \"Press B\" to throw what ever you have lifted and as you see your character start to throw the object \"hold A\" again and you will throw the object and double jump again thus allowing you to get to high places even easier.

Double your fun - complete your first mission in Co-op mode.

The Agency SUV can drive up walls when you hold B. Its wheels must be vertical against the wall.

Achieve a height of 115 feet or more in a vehicle.

Note: The only cars that change are the Agency Supercar, Agency SUV, and Agency Truck Cab. Whenever you reach level 4 in your driving status and the car has evolved completely, major changes in performance occur.

The Agency Supercar's horn is replaced with a heavy machine gun. Press B to use it.
The Agency SUV's horn is replaced with a powerful hydraulic system allowing it to jump. Press B for a short time and release to jump effortlessly.
The Agency Truck Cab's horn is replaced with a powerful nitrous boost that can cause it to plow through anything. Hold B to plow through all who stand in your way.

Take the truck and drive out Gate 1. Follow the road until you reach an intersection. Turn left. You will see the on and off ramp for the major highway. Take it then drive the truck along the highway at maximum speed and ram gang controlled cars. Try to avoid innocent and polices cars or you may be attacked. If done enough times, you will run out of cars on the highway. Just die and more cars will reappear, or quit and come back. You will soon have star level driving.

At the beginning of the race, get out of your car and go to the nearest corner that has cement blocks. Grab the cement blocks and create a sort of barrier in the middle of the road (stack them if possible). This makes it almost impossible for your opponent racers to go past that point. Shortly afterwards, they will all crash and pile up. Once all of them are piled up, shoot the gas tank of one of the cars. A chain reaction will occur and all the racers will be dead. You are now the only one remaining in the race.

Once you get to the Shai-gen and you have three stars in agility go to the supply depot to the upper right of the top island in the Shai-gen section. Climb to the top of the next story on the building with the supply depot. use either the rocket launchers or the snipers and look at the other rooftops there will be guys on them and if not then go to another supply point and come back. then eventually you will notice that the shai-gen are mosty in groups on the rooftops thats where you get your strength up just beat them to death. be careful though they have riot shotguns, m-16s, and homing rockets.

Fire away - shoot and kill 500 gang members using firearms.

Eliminate the first of 21 gang bosses.

Note: Your driving stats must be 1 or higher. When your agent vehicle is heavily damaged, step out of it and allow it to return to its normal form. Then step back in and all the dents and damage will be gone. However, the vehicle\'s health will remain the same.

This glitch requires the Keys To The City expansion, and can easily be done in Co-op mode. Go onto the pier that extends out into the ocean and spawn two ramp trucks back to back, with enough room to spawn a buggy in-between. Have a friend get into a ramp truck. Park the buggy on the ramp truck that your friend is not in. Then, have your friend back up into the other ramp truck (the one you are on). You should all go flying up into the air, with the possible exception of the ramp truck that the buggy was on. Note: While on the ramp truck, its recommended that you hold the hand brake (A) to keep from sliding off.

Collect 500 Agility Orbs.

Execute two forward flips in a single jump in a moving vehicle.

Some of the information for this game requires the "Keys To The City" downloadable content. It can be obtained by using the following steps.

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".

Log into the Xbox Live Marketplace. Do a search for "Crackdown". Find the "Free For All" download and the "Keys To The City" will be in there, for free.

Kill 15 gang members using the Observatory Globe.

Execute a 6-second jump in a vehicle.

Make your way to the top of the Agency Tower.

Note: This trick required the Colby HRX Harpoon Gun. Go to the Agency garage and make sure you have two bodies laying around. Use your harpoon gun and get two bodies harpooned to the Agency garage door. Choose a car and when the Agency garage door goes down, it will stay stuck like that until the two harpooned bodies disappear.

Unlock all Supply Points.

The \"Wired\" billboard signs throughout the city tell the leaderboards for the car race times. If you are playing co-op then it will display the name and rank of your co-op partner.

Murder Los Muertos - Kill all Los Muertos gang members.

Locate all Los Muertos dossier targets.

Show your explosive personality - kill 500 gang members using explosives.

Earn 4-star ratings in all five skill areas and then max out your Skills Status meters.

Collect 300 Hidden Orbs.

Successfully complete all 12 Rooftop Races.

This must be done on Keys. Get the super car, 4 stars with empty streets, and on the highway keep driving until you get to 190 mph or more. Then put your driving skill back to 0 stars, then you slow down for a second and then you speed up past 200 mph. Be careful, your car may fly over the over the railing into the water.

Normally you cannot precision target civilians. However, if you kill enough of them in a short amount of time without using precision targeting (using rockets or heavy machine guns in well populated areas recommended), you can auto-target them and they will become blips on your radar. However, the Agency Peacekeepers will be angry with you by then.

This trick requires the Keys To The City expansion. Enable the "Empty Streets" code, then get onto a reasonably long straightaway. Face your character (and look) directly down the road in one direction. Spawn a ramp truck. Then, face and look in the other direction and spawn another ramp truck. Get into one of the ramp trucks and reverse into the other one (so that your ramp hits its ramp). Both trucks will instantly rocket into the air.

Wreak havoc in 60-second increments.

In Keys To The City it is possible to get to any elevation by jumping, spawning a ramp truck at the correct moment, then landing on it and jumping. Repeat those steps to get higher.

Commandeer 100 gang-controlled vehicles.

Drive through all of the unique Stunt Markers.

Successfully complete all 14 Road Races.

Mow down and massacre 175 gang members while driving.

In Shei-gen, there is a hotel on the west side of the Island called The Daisy Chain. If you enter Shei-gen from the Los Muertos side, it is between the two highways. At the top of this hotel is a pool. In the pool is a rubber duck toy. You can throw the toy at people and it will make a squeaky sound like a real rubber duck toy.

There is a duck in the hot tub in La Mugre, which is the first island with Los Muertos. You can find it at the apartment complex where you kill Violeta "Santa Maria" Sanchez.

If you find you are having trouble running over gang members with any sort of car, try to drive very slowly at them. They are much less likely to try ti dodge your car than when you are driving at a high speed.

Assassinate Shai-Gen - Kill all Shai-Gen gang members.

Locate all Shai-Gen dossier targets.

Go into Keys Of The City by yourself or in Co-op mode on Xbox Live. Put four stars on all your skills. Go on the highway. Have a friend drive the Agency Supercar or do so yourself. While you are in the car use the cheat window to spawn a ramp truck. When you are at full speed hit the spawn ramp truck button about three times. You will fly or go through the map. If you spawn a ramp truck on Wang Tower on the cement wall sides then jump off it with an Agency Supercar, you can go through the Wang building as well. If you get stuck you may have to extract.

Throw any object (other than a grenade) 205 feet or more.

Successfully execute five car stunts - front and back flips, barrel rolls, a long jump.

Partner up and complete every mission in Co-op mode.

Unlock your first Supply Point.

Wipe the city clean by taking out all members of all three gangs.

Execute six car stunts in 60 seconds.

Eliminate the Los Muertos, Volk, and Shai-Gen on any difficulty to unlock the ability to turn on or off the respawning enemies in their respective districts from the game start up screen. Effect - Code Toggle Crimes On/Off - Eliminate all 3 gangs (finish the game)

This trick will only work in Keys To The City, which is available for download from the Xbox Live Marketplace. During game play, press Back. Set all of your skills to have four stars. When you get in the truck cab it will morph to the biggest possible. Enable "God mode" so you will not die when attempting the jump. Also choose "Empty streets" so you do not hit cars in the process. Go onto a straight and long freeway. Gold B to speed it up then press Back. Select "Spawn ramp truck". When you are going about 190 mph hit it, then change the camera angle to the side of the truck. Then press Y to spawn the ramp truck and the glitch will begin. You will fly for a very long time.

Go on Shai gen's island and just south of "the block" Agency supply point. There are two mini skyscraper buildings that have the words Tower 1 and Tower 2 on them, one for each building.

Kill 200 gang members without dying yourself.

In the Volk go to "The LCOVE" across from "THE Y". Look for a billboard with a Dodge Nitro on it. Watch it to see the #1 ranks on each map.

Eviscerate the Volk - Take out all Volk gang members.

Locate all Volk dossier targets.

When in regular game play press the up button on the D-pad to zoom in with any gun.