Walkthrough: At the Gates/Secure Missile Guidance System
At the Gates Objectives:
If you kept the crossbow from the previous level, completing this mission will be a breeze. Eliminate any snipers as necessary. A W2000 sniper can be found in this level which will help you out a great deal.
Secure Missile Guidance System Objectives:
Another level which presents a multitude of alternative ways to complete the level. Here's a very basic method. Begin by picking up the bomb from the Wings and place it on the helicopter (the other alternative is to leave it be and use this as your means of escape).
Players who choose the sniper rifle method can make use of a series of locations throughout Hayamoto's domain, just outside his 6th room window. When you reach the wings, be sure to pick up the keycard which will give you access to the second level. Then proceed to the first room which is full of the squeaky floors (be careful here, because they're noisy and will alert guards to your presence. Duh.). Check the map and analyze the levels, your goal is to proceed up to the 6th floor (where Hayamoto Sr. is located). Kill the designated target and take his keycard. Now head back to the beginning of the level, through the squeaky floor room and proceed downstairs. This will take you to the museum and surprise ? the location of the guidance system. Oh, and there's also a new weapon for 47 to make use of ? the .22 SD pistol.