At the start of the battle run up to her ASAP shoot an RPG to the AI Pod. Quickly switch to the LAW, shoot it and move to get evade the missiles. Now toss a Support Strike Marker under it to have MSF attack. Now keep attacking with the RPGs and LAWs while you evade the missiles. After 2 RPGs, 2 LAWs and an MSF strike, it’ll enter auto defense mode. Phase 1 completed.
It still has the flamethrower, the S mines, the howl and the missiles. Something new it has is the Drill Missiles. Just move to evade them but the bad thing is that they go underground and come up and hit you. Keep moving without stopping. When the black orb is shinning red Do not shoot your RPG nor LAW& because it’ll turn back at you. Keep shooting the AI Pod over and over with everything you have. When it starts moving behind the buildings, shoot it in between them to have Peace Walker attack you giving you some time to attack it.
It’ll try launching the nuke again several times, so make sure you always have at least 3 missiles with you when this happens. You can also use your Strike Support to help you prevent the launch of the nuke. This is pretty much is for the fight =). Its simple but it takes forever!
Once you’re inside the AI Pod, take out every board you see. You have 4 minutes to do so and it should take around 2 to do it. Now watch the scenes.