Crackdown Glitches and Easter Eggs (Xbox 360)

The game is set in a large sandbox environment, akin to the video game, Mercenaries: Playground of Destruction. The player must either take out the Kingpin of the dominant gang, or take out the bosses that perform specific tasks for the gang under the Kingpin to weaken the gang's production or the forces immediately protecting the Kingpin, thus making it easier to defeat the Kingpin and increasing the odds of successfully assassinating the Kingpin. It is the player's choice to kill the bosses, or skip them entirely to defeat the Kingpin.

This being said, the gangs cannot be entirely destroyed unless the player tracks down and kills all the Generals and the Kingpin. The player (who is chosen at the beginning of the game) is required to explore the city to locate the hideouts for each boss and Kingpin, which can be made easier by freeing supply points scattered around the city. Once a supply point is unlocked, the player can return there to travel to any other supply point, restock on weapons and ammo, or drop off newly acquired weapons to have them permanently added to the player's weapon selection.

Easter Eggs

Leaderboards
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.

Glitches

Double Jump Glitch / Exploit
Lift an object. Jump with the A button. At the height of your jump, press RT to throw the object and immediately press and hold the A button to do a double jump. It might take some practice but it DOES work.

Resurrect Miss Timbol
During the fight with Miss Timbol of Shai-Gen, there are two buildings to the east and west of her compound. On the side of those buildings that face the compound is a walkway with two doorways into the buildings. After killing Miss Timbol, pick up her body and take it to those walkways and enter the building.

Immediately go back out and Miss Timbol should be alive and completely harmless. This is an exceptional way to level up your Explosives, Physical and Shooting stats. However, do not let her body out of sight, or else it will despawn and she'll never come back.

Here's a video that shows the greatest achievements in Crackdown: