Aaand, I've made it all the way to Drangleic Castle on NG++ and got WoG and Great Chaos Fireball. Also, beat the NG+ and NG++ bosses so far without help from summons. The Lost Sinner was a big pain both times. And right after I beat it on NG++, they nerf him/her and the pyros in the patch released the next day. I'm glad I could manage to beat the Lost Sinner while he/she was still at his/her hardest though.

I've also managed to win my first 3v1 invasion, in the Sinner's Rite - right after going down the elevator. Lured the first phantom out while the host and the other phantom were being chickens and staying back in the elevator room. Got a a few hits in, then killed with a backstab. One phantom fell down the elevator hole by accident while trying to cast great lightning spear and then rolling away after I rolled through it (the elevator had gone up again for some reason) and then I beat the host 1 v 1. Very satisfying, even though the second phantom basically just suicided.