i too suffer from all those symptoms, stemming from childhood trauma.
I have gotten temporary relief from Low Dose Psilocybin and from Ketamine;
Ketamine stopped working very quickly but I still wanna go back and try the LDP, the return of feelings that I experienced was simply amazing, of course I'd have to get rid off my SNRI (Effexor) first ...
another combo that worked for some time was Zoloft + NSI-189 + big doses of a natural compound called Relora - it's relaxing and has strong anti-cortisol properties, thereby helping with HPA-Axis Repair. apparently a lot of people who suffer from emotional trauma have a dysfunctional hpa-axis, so it might be worthwhile to also focus on that aspect.
my next pharmacological endeavour will be combining my current daytime-ad Effexor with amitriptyline ... do you think that one would work, jiaho? (I know, you think effexor+mirtazapin would be the better combo, but I've tried that one and it only did so much, and I'd much prefer to have nortriptyline but it's not obtainable for me, residing in austria)
or to try and add abilify ... I've also heard about some success stories of lamictal, but that one gives me insomnia
it's very hard for me to make up my mind about an antidepressant and stick with it, i get disillusioned so quickly and i always get strong side effects;
effexor and zyprexa, for example, also seemed to work somewhat but the sugar cravings were insane so i stopped one week in. i strongly belief in a healthy gut being essential for dealing with anxiety and all that sugar just messed my gut flora up.
Good Luck to you and listen to jiaho, he seems to be in the know concerning anhedonia