Batman: Arkham Knight

This is the second Penguin side mission. As with the first one, you will get a call from nightwing at some point in the story, telling you that he has spotted another truck. Again you need to follow the truck and stay out of sight. Use the glide ability and the detective mode to keep an eye on them
As soon as they think they have lost you, they will start heading towards their base. Follow them and enter the hideout.
You will be facing two sentry guns. Use your hacking device to hack the door control across you and get the batmobile to your position to shoot the sentry guns.
After that you have to grapple your way up and fight the goons together with Nightwing.

Once you done all the above you can enter the vault, spray some explosive spray on the cache and close the vault door.
Let it detontate and the achievement is yours :-=)

For further help refer to the video below:
(video credit: Kicknazz Games)

Hope this helps you guys :-)
Any improvements? Please let me know in the comments below!