Occupation of Arteria Carpals

[Kharos]

Hey y'all.

I have the obvious problem. I can't beat Arteria Carpals. Or, to be precise, I can't S Rank it. My current method is to start charging the HYDOR Kojima Rifle arms as soon as the mission starts, and stand on the wall at the point where the 4 NEXTs pass over it. When they do, I blast one out of the air, whichever one I target first. I then RUN AWAY! to the other side of aforementioned wall, and charge another blast. I go over, and blast another. Lather, rinse, repeat. Now, my problem is, I physically CAN'T S Rank this. I have been trying for 3 days. I've even tried sniping them while they're distracted with Lisa, but then they notice me. Ultimately, my methods don't work. Can anyone suggest a tried-and-true method? I've s-ranked every other mission except Defend Arteria Cranium. If all else fails, I may try the wall glitch, but I couldn't get it to work. Can someone take a screenshot of the wall in question and give me step-by-step instructions, as a last resort?

[pandarocket]

If you are still having troubles and want to try the wall glitch, this is what you need to do:

Make a mid-heavy frame with good PA and equip the OMINA FCS, ARGYROS/G generator, 041AN03 arms, the best assault OB, dual JADORE back parts, dual CANOPUS hi-laser rifles and the P-MARROW shoulder unit. When you start the mission, fly forward and into the complex, straight across the middle and out the gap in the wall ahead and to the left. Once outside the wall, turn left and follow it down. Use the map to get an idea of where to stand.
__________________________ Face the wall directly and wait. Your CANOPUS
| Fly through here hi-lasers will poke right through the wall.
| * ______ Wait for the enemies to kill Old King. Then
| | |___ they'll head to the other side of the wall
| / you're facing. You should get a target lock on
| / them. Even though it's green, you'll be able to
| \ ____ hit them. Use your AA periodically to damage
| Stand -->\/\ _____| and strip away the PA of your enemies. Don't
| here \ fire your lasers until you have a good shot.
| One by one they'll drop. This method can take
| o Start here anywhere from 5 to 20 minutes, but it's 100%
^^^^^^^^^^^^^^^^^^^^^^^^^^ effective and you'll take no damage whatsoever.
Be sure to use your AA every time your PA recharges, this will make it much,
much easier to kill each NEXT.

If you haven't got P-Marrow yet, you get it after the Defend Arteria Carpals mission on hard (any rank).

[Kharos]

Thanks, you're actually really helpful. I owe ya a lot.