Mit dir cool gespielt! Zu Freunden hinzufugen, ich werde mich freuen. <3

Yeah, I didn't start using any status effect stuff until that spider really. Was mostly just melee attacks, did 2hand on the main character and farmed around 30ish STR seeds in the first act.

Slain are you really from Aland Islands? That's amazing, I was born there!

I've done everything except the final boss, and some material grinding to craft all appearance altering gear.
The spider wasn't a problem, Erik and Veronica pretty much nuked it by themselves.
Overweening Pride was predictably tough though, and forced me to alternate between Serena and Eight using Kerplunk which felt cheesy. The Fifth Harma trial was a bit annoying because of "No Fleeing from Battle", I had to just let them kill me whenever I wanted to retry.

You have to consider all of your options more with these restrictions.
A lot of enemies are perceptible to Dazzle and/or Sleep, which can buy you a lot of time. Buffing+Debuffing is basically required for some bosses, and it can make sense to bring multiple characters into pep ahead of time to start difficult fights with something like Arise+Yggragon's Blessing.
I also figured out the Hallelujah/Electro Light XP grind during Act 3 and was around level 80 for most of post game, that probably helped a lot.

Yeah that does sound like it'd be a pain, I prefer difficult rpgs tbh, Did you do the act 3 side stuff? (Giant spider a second time etc) Can't imagine that spider must have been rediculous, I was at about level 63 when I got to A3 and felt extremely underleveled the entire time.

It's honestly not that bad, most of the game ended up being just the right amount of challenging.
There were a few bosses that were absolutely infuriating though, Rab in Act 2 almost made give up on the whole thing, and Jasper Unbound was a lot more difficult than he had any right to be(though I did learn that I was supposed to be like 15 levels higher for him). Both of those fights were basically just down to luck which never feels good, and for Rab you need A LOT of luck.
Rather than difficulty, my biggest problem with 6x Draconian is the loss of core mechanics. "No Shopping" means gold is largely worthless. "No Armor" means a huge part of character customization goes down the drain, and appearance alteration go right with it. Also no shields. The whole experience feels a bit more shallow.

The way you played the game was probably optimal.

Holy crap, you actually did that? I had reduced XP from easy fights and super strong enemies on and my GOD was it already tough. Doing that without armor? Sounds impossible

klasse leistung bruder weiter so!