Time to sit down and get some missing achievements I think.
Complete the final phase of Project Sunburst at Agency Tower, alone or with another Agent. - Crackdown 2
Close down every Freak Breach in Pacific City, alone or with another Agent. - Crackdown 2
Kill 5 enemies with a single gas cylinder. - Crackdown 2
714/3,565530/1,50026/70
178/1,438115/50012/36
32/33730/2003/12