Help with the medals of the Company (Resident Evil 6)

You killed 3 or more enemies with the Gatling guns.
You crushed the hand of B. O. O. I Realized that somewhere in rasklapanje, but where - no.
You forced the enemy to destroy 10 walls.
You destroyed all the zombies with attacks B. O. O.
You saved Leon from the fate of becoming food for B. O. O.

Where to do that?