Time to be super cool, Brewing Storm.  Rather than a couple of big combo attacks, I'm looking for each one of you to have your character attack full-force while the Manticore's dizzy from the chaingun barrage.  Though it will still lash out, your character is now 'in the zone' so to speak; I think it would be pretty rad if all of you had your characters perform some really cool moves one after another, each playing off the person who acted immediately before you.  For instance, Krayzikk might have Ben leap into action right after Goodwitch to exploit the wound she inflicted.  You all have my permission to really hurt the thing, and to control its attacks and actions appropriately within your own post, but only the very last person to post can finish it for good.  

This isn't some super-rigid request, but rather an idea for how you might structure this last, critical moment of the mission.  Have fun!