Crackdown achievements

Partner up and complete every mission in Co-op mode

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

Use the Harpoon gun to attach 5 gang member corpses to a single vehicle

Wreak havoc in 60-second increments

Execute six car stunts in 60 seconds

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

Execute a 6-second jump in a vehicle

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

Kill 15 gang members using the Observatory Globe

Blow up 100 explosive objects in 60 seconds

Achieve a height of 115 feet or more in a vehicle

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