Wow...talk about a hard boss for the ending. Can't shoot Fortune in the back since it has a shield there. Can't shoot the enemy lackies down since they're protected by that shield as well. Try and attack from the front and get fried by gamma rays.... Sheesh.

I bet the Dragoon system has shields on its pods to protect other MS just like how Destroy had shields on its hands when it detached and flew off.

Only feasable strategy I see is to have SF sniping from far away and use its dragoon system to occupy Fortune's dragoon/shield system, while having IJ act as a distraction from the front (dodging gamma rays), while the detachable flying pack of IJ does some sort of sneak attack (most likely from behind at this point.
I also assume that Destiny and Legend aren't involved while Kira and Athrun are fighting Dullundal. Most likely Shinn and Rey's MS will be destroyed or too badly damage to fight or Akatsuki/DOMs/Mwu/Gaia/Yzak/Dearka or any combination of these guys will keep them busy.

I love strategy.