Oh no, VK4502B!! Whats a poor Russian IS to do?

ARGO: The VK4502B is a nasty, nasty tank. It can kill at distance and it can take a whole lot of punishment. Some call it a mini Maus. Others call it a royal pain in the.....well you know. So how do we rid ourselves of this bad actor when out cruising in your IS 1,3,4, or7? I am sure theres a few of you with some good tips and or stories about a successful run in with this monster so share the wealth and give us all some pointers and or weak points.