Forum:Can't get past rakk hive

I am on playthrough 2 and am fighting the ultimate rakk hive and It is LITERALLY impossible to kill it.I am level 43 Soldier and i have used rocket launchers combat rifles even whittings elephent gun over and over again but he won't die.Please if you know a strategy or know of a gun that will for sure kill it.Please tell me.I don't have X-Box Live so i can't go online and play