Chaospread

Yeah, I remember you stunlocked Dorudugan in this way some time ago: Maybe there's some video about it around internet

If you don't want a caster class, I'd try a Barbarian.

In my solo runs I end with Eccea's Arcane Blaster as range/backup option with all of my builds even if they are not ranged characters: it is an "all-rounder" weapon valid in many situations, and aside elemental damage enchantments (very good) also the 3-bullets-split is a great enchantment, for abilities proc too.

No way with weapons, I think the best thing is a lot of lore and using damaging scrolls.

Because Fighter has higher ACC and it is very important in SOLO.

Yes. It is only quite necessary in PotD SOLO. Behold the Martyr Apprentice's Sneak Attack Or, why not an exhortation instead one of of these?

... and don't ally with Knights of the Crucible

High lore + high ACC + scrolls of Paralysis, Confusion and Maelstrom. End.

Yes, here I am, got the buff in my current run then I have slept and the bonus has went away but I got +2 Burn AR and strong after a critical hit until I had rested.

Try to load an old save. Or exit to home screen and reload...

You can play a mid ranged Cipher. Blunderbuss are a good weapon at low level, then other ranged weapon can be useful to build focus (arquebuses, crossbows etc... not magical implement). Two pistols as in Deadfire should be wonderful, but you can't 😅 Whisper of Treason, Mental Binding, Recall Agony are the bread and butter for Ciphers, mid to long range, low cost and fast cast. At higher levels, Tactical Meld, Time Parasite, and Defensive Mindweb are game breaking. You can play it like disabler, and when the battle last enough, you can put in your arsenal also Puppet Master, Eyestrike, Psychovampiric Shield, Pain Link , Ringleader etc... and go melee too. Never played a Cipher for damage from spell, apart from Disintegration, the others are occasional spells or an amusement to try and forget. And I never trust rays or similar, too much cumbersome for myself. But with right eq, also a melee Cipher in SOLO can make wonders

Elf is good for DEX and PER, but better Wood Elf than Pale Elf, Elemental Endurance is an occasional bonus. Boreal dwarf is occasional too, and you don't want DEX malus. Towerin Phisique is nice and also +2 MIG, but the best for me would be Moon Godlike, DEX and INT bonus plus self healing

I'd do mig 18 / con 8 / dex 18 / per 10 / int 18 / res 6 I've make a run with a solo wiz just hard and he worked well. Per is not so important in PoE1. And Rotfinger Gloves on top of that (Touch of Rot)

Never occurred to my fire godlike....

Yes, indeed, a +3 PER bonus often don't change a hit to a crit, but in the meantime a +18% AoE and +15% duration of buff and debuff can be important 👍🏻