Level Site Glass

im stuck with 3 i just cant get, they are...

Cheshire - Mirror, Mirror: Destroy all glass objects in all three sections in cheshire level

&

Somerset - Misplaced Aggression: Blow up all cars in the town section in the Somerset level

&

Thames - Le Parkour: Finish the battlefields and rooftops in the outskirts of London within five minutes

i was sure i have done what is required to get em, but obviously not.

if you have done these, or got any helpfull sites or info would be great...

Thanks