So, I was playing on Buried solo, doing my usual routine, and it was around round 10, I had all 7 perks, and I got trapped. I went down and got sad thinking I'd have to get them all again, but when quick revive picked me up, I had all 6 perks still except quick revive. I survived until round 50 and went down again, only to have all 6 perks again upon reviving myself. (I got Quick Revive again by running though the mansion.) So, I'm just wondering, what is required to get permanent perks on solo? I know the easter egg gives you them, but I don't think it's possible on solo and I haven't even done it yet. I'm trying to upload/save my gameplay, but the stupid theater is saying the film is invalid, probably because it was a 6+ hour game. I'm just curious as to how I got them, since I don't think I did anything different or special. I searched and didn't really find anything, so here I am speaking out to the community about my experience