Dirge of Cerberus: Final Fantasy VII/Chapter 4 - Headquarters Under Siege

Walkthrough
You're in the WRO Headquarters now, your starting point being the ground floor. However, DeepGround isn't going to make this easy for you - there are rocket-launcher armed DeepGround soldiers around on the upper floors. Use your sniper scope and your rifle (or a long-range barrel and your rifle) to take them out first, as their missiles can really pack a punch, especially if you're low on health and you forget that they're around. Concentrate next on assisting the ground floor WRO troops. After clearing the ground floor, go up to the next level, use the mako point nearby if you like and there are a few crates hanging around, crack them open for a few items.

At the second floor, again clear the floor of DeepGround soldiers, and one of them will drop a new accessory for your gun. Collect the card key, pass the laser gate, and when you reach the corner a DG soldier will spawn, so kill him for the cark key. Use the card key, and go up to the 2nd Floor.

(Note: To Be Continued.)

Boss: Shelke the Transparent
The best way to beat this boss is to use a limit breaker and duke it out with her - you can't match her speed and if you get too close her attacks will bite swift and sharp.

Assist the WRO members!

 * There are 20 WRO members in need of assistance.
 * Kill the enemies surrounding them to 'assist' them.
 * An indicator that they're safe for the moment is when they just stand around, guns pointed down.

Hurry to the Command Centre!

 * At the start of this mission, there is a timer at the top of the screen to help you.
 * To get the best ranking, reach the command centre before less than 1 minute is shown on the timer.

Annihilate the Enemies!

 * After you see Azul, the door at the opposite end of where he was is now open.
 * Operate the heavymachine gun and destroy as many enemies as possible.