Survive-ability with Perforate Zerker Marauder

Well as you can tell from the title I'm a Zerker Marauder that uses Perforate as mine main attack. While I've enjoyed this build I would really like to make improvements to it on it's survive-ability and before writing this I've tried doing some things like messing with the skill tree and gear. My main focus is to really try and keep the insane damage output while maximizing my defenses as much as possible to make it to where I don't die so often. I'm open to discussion and ideas to help me change for the better. Thank you for any help that may come my way.

Here is my build. Sorry for not adding it before. https://pastebin.com/mgdPaQ7g