Hello Therealme
So sorry to hear what you are going through. I left my NPD husband four months ago. He was my only relationship and we'd been together since teenagers, although there were signs that he was unstable early on, it was really only when he hit his 40's and life wasn't going so well for him that the mask truly came off.
He built a fantasy world for himself where in his head he he was a highly successful businessman. But when the illusion started to collapse and he didn't make money, couldn't sell things, he looked around for others to blame.
He was jealous and possessive, resented any life I had outside the home and eventualy he persuaded me to refer to a therapist because he believed I had a personality disorder and suffered with severe stress which was destroying our relationship.
The therapist was a life saver, we saw her together for a year and she helped me to understand that I migth have been stressed but the reasons lay in my home life which I believed was totally normal. On a daily basis I and our teenaged son were critiscised, blamed for anything going wrong, told we were not normal - but in such a way that we were grateful for his words. Just like you we were verbally and emotionally abused, like Unlikely and Getting a Grip I'd been conditioned by a strange upbringing with a father who had sudden violent rages and a co-dependent mother who I could never quite be good enough for.
Once the realisation came of course I began to resist ExN and then the abuse escalated until he hit me. I told him I wanted to leave and he tried every trick in the book to keep me there. He tried self-harm, threatened suicide, got youngest child to plead with me to stay.
Eventually with the help of Women's Aid, I released the only way was to leave whilst he was out for the day. My parents agreed to have me to stay with children and pets for two weeks. Over the next 6 months I gradually moved out all the documents, jewellery, photographs that I wanted to keep and secretly rented a house a few miles away. I couldn't move completely away as I needed to keep my very good job to support myself financially.
Women's Aid warned me that ExN would be violent and I had the Domestic Violence Unit on red alert, my employer informed etc. etc.
Being an N he didn't react at all as I'd guessed. His verbal rage was terrible, I went back to our house with my father and I called Ex's brother to be there, I felt I at least needed to tell him why I'd left (due to his abuse of me and son).
He sent me an e-mail begging me to come back on Day 2 after I'd left, 2 weeks later he was on dating websites 24/7. 2 weeks after that he'd met several women from the dating website and "picked" the one he wanted. This new woman is a high-flying career woman with 2 broken marriages behind her. She's quite wealthy and very attractive -but probably quite vulnerable. They are now talking 4 months later about moving in together, her wealthy parents giving him a business to run. I feel so sorry for her, she's fallen for an illusion.
As UA has said, every N is different. I beleive mine is a "fragile Narcissist". He's a total charmer, a hypochondriac with big puppy dog eyes and truly terrible tales of his childhood and awful bad luck things that happen to him which are so not his fault. He appeals to a gullible type of woman who wants to rescue and love him better and will look the other way when the mask slips off.
As for me, now he has a new woman and her new family, I've been discarded (even though I left his behaviour had been so abusive I believe it was his way of devaluing and discarding) and I'm more or less free. My teenage son who was so badly affected he attempted suicide himself is blossoming and so much happier now we've left. It's funny how he could see through ExN months ago when I was still completely brainwashed.
Anyway, Therealme, I hope my story has helped a little. It was very therapeutic writing it down! Both UA and Getting A Grip gave me hugely valuable advice just before I left (I had a different screen name) and they really know what they are talking about.
I would say in your circumstances you would definitely have to "do a moonlight flit" as your N doesn't sound as if he will let you go and certainly not the DC's. You will need a lot of support and some money too if you can get it or save some up.
I think the worst and saddest thing for me has been the knowledge that as I've only ever had this one proper relationship, I've never really been loved by someone who's capable of loving and that's hard to come to terms with. Plus I'm so emotionally damaged I can't see myself ever trusting a man again to experience the real thing.
On the positive side, I've survived and I have my two wonderful children and I think they might just get through this without being psychologically damaged with all the love and support I can give them.
Sorry this has turned into a very long post and hope it helps. Keep posting for support if you need it and wishing you all the luck in the world.