Hi Desolate, I'm sure you have a lot of information to take on board, but just to add my two cents...
It sounds like your depression is 100% holding you back from doing what is ultimately right for you, although admittedly scary. Please go and speak to someone, whether it's a GP or a Samaritan or a Vicar...please speak to someone who is physically present.
YOU DO NOT DESERVE TO BE TREATED LIKE THIS. I cannot say this enough...NO ONE deserves it. If you suffer from depression, you may disagree, you may be willing to accept any bone he throws you - this will jsut drag on and on, and eveuntually you WILL get out, but you will have lost a lot of who you are. Please just get it over with, leave, anywhere.
I know where you are coming from with not having friends and family around, it makes it SO much harder to go, but there ARE places. If you don't want to go back to your flat, could you not just go on a trip? I know it sounds ridiculous and is the last thing you might contemplate, but honestly, go somewhere you have always wanted to go...somewhere cultural and interesting, and go ALONE. Because you will realise very very quickly that you CAN be on your own. None of us want to be, but when you get stuck in an emotionally abusive relationship (which it really sounds as though you are), you forget that it's even possible to survive on your own. He has made you forget.
At the end of the day we can only advise and offer a shoulder to cry, rage or vent on...you have demonstrated in past posts how much better you felt for actually talking to 3rd parties about this...I would suggest you go to your apartment or a hotel, call the Samaritans, and speak for hours and hours if you need to. They care about what you have to say, and will not give up on you, unlike this man in your life.
My heart is breaking for you right now and I know just what you're going through...I know that 1000 words will not persuade you to leave unless you feel that you can survive, but please speak to people. Please get away from him, even if only for a few days, just to breathe.
Maybe that's the best - give yourself 3 days away from him, no contact, out of that apartment...and if you feel suicidal for even a moment CALL SOMEONE or get your butt on here and let it all out over the keyboard.
hugs