My best win at mvm was way back during its launch, back when the gold bot weapons could net you a low-tier unusual. The hype and stuff really worked in my favor.
Using SkyRe. It seems to try to be a better vanilla experience rather than "hardcore" like Requiem. It's still quite challenging. Arrows hit hard, but are slow as heck to fire early on. Hammers and such like to one-shot me. I don't know if I'll be needing a shield. Would prefer using magic.