After old_git showed me the better build for the Psychological Class, and knowing I had over 5 minutes to save in zone 7 alone I figured I would look to see if sub 3 would be possible. This run was a lot better than the first one: didn't spend nearly as much time on useless menuing throughout the run, my strategy for 7-2 was actually consistent this time..., my builds were a bit better, etc. With more attempts there's obviously still quite a lot of time that can be cut from this run but for now Ill leave it here I think :)
For the achievements themselves I will add timestamps in the youtube description again in the following days. All non-automatic achievements were done during the Psychological run. Also worth mentioning is that I almost messed up the Pacifist achievement. I accidentally attacked The Hydra with Dark Infusion twice (for around 1700 damage total). However I checked the wiki and it says DoT does not count and the total amount of direct damage I did was still below 2000 even with those 2 accidental attacks so I think the achievement should still be valid. Otherwise I guess I'll just have to run the category again :)