Kaylon

It has two abilities - one passive and one active. The passive one gives +1Res to both "lovers" when close enough to each other (I suppose it works also for a trio). The active one gives intellect immunity to the "lovers" until the end of combat - the summons can't benefit too much, but if you can keep it yourself it's a nice option to have. The wiki doesn't say if it's /rest, but if it's the case then it has limited use, indeed.

Does the Ring of Reset work with the Dichotomous Soul? Also having Harmony equipped does trigger Lover's Bond between you/Dichotomous Soul?

As a herald there are many good helmets you can wear. My personal ranking is Champion's Helm > Horns of the Aurochs > Blackened Plate Helm > Heaven's Cacophony > Death's Maw. Usually the Horns should go to a damage dealer who can benefit more from it, while the Champion's Helm is more suitable for the main tank (your herald in your case).

Melees have better accuracy (Scordeo's Edge buff, no penalties) and more options to debuff deflection (Persistent Distraction + Cap of the Laughing Stock + Rust's Poignard/Sungrazer procs) which means easily 40-50acc advantage over a blunderbuss user. Melees also have better damage and hard CCs (prone, stun, freeze) which makes them superior in almost any situation.

Yes, you can prolong hostile effects multiple times, it works just like Strand of Favor with self buffs. It can be very useful if you want to avoid using modals 100% of the time or if you want to keep dots going forever. To give a strong boost you should apply Enfeebled first and, when it nearly expires, use the debuffs, then apply Enfeebled again right after the first expired. Anyway, you can use that first step with any kind of build without too much hassle. This trick can also allow to easily stack multiple dots like Poison-Dipped from Saru-Sichr or Bleeding Cuts from axes.

It works even better with a trickster/unbroken (Eder can fit that role well) because all disengagement attacks can get sneak attack/deathblows bonuses. One Dozen Stood, Magran's Favor and Magran's Blessings also work nicely with this build (the damage shield gets also sneak attack/deathblow bonuses) and you can get also free attacks from Riposte (especially with the medium shield modal activated).

Then a Forbidden Fist with low INT can prolong multiple times hostile effects.

I thought it was auto hit...

I wasn't aware about this combo and I'm not sure I understand... Energized interrupts only crits, how could "Thick Grew Their Tongue" interrupt when it can't event crit?

Alt-F4 is an external method used to stop the game and a well known trick used to avoid death during the Trial of Iron - thus it's obviously banned. Regarding bugs, the devs allowed basically any exploit to be used as being part of the game. By the same reasoning game breaking bugs are also part of the game and should also be avoided within the game.

Basically everything is allowed as long as it doesn't come from external sources. Probably the most OP build for the ultimate is a Bloodmage who steals the most powerful/useful priest/druid/wizard spells using the Grimoire Imprint trick... The assassin is probably the most powerful class you can build using SoF trick, but he will have more difficulties to keep Vela alive.

Playing Steel Garrote is useless for your setup since the drain applies only to melee weapons. Personally I wouldn't bother with anything else than Ghost Heart because without a real tank some pets will die sooner or later and it will add more problems. I would replace the wizard with an ascendant because he has great buffs (Brilliant, Robust,...) for the party, CC and accuracy. You need the paladin for healing and buffs - I would suggest a Kind Wayfarer or a Bleak Walker instead.

For a PC without infinite invisibility is not worthwhile, for NPCs under AI even less. Applying Gouging/Arterial Strike to multiple targets does more damage overall than striking from stealth a few times.

At first you should spend your focus on Phantom Foes and Mind Blades, later replace Mind Blades with Pain Block (keep it up on the entire party) and finally add Borrowed Instinct and Ancestor's Memory. You start the fight with Borrowed Instinct and Phantom Foes, while Pain Block/Ancestor's Memory can be scripted and left on AI.

You should make a clear list with the exploits you don't want to see because there's no general consensus here...😉 What about using Salvation of Time/Wall of Draining to extend powerful buffs forever or using infinite DOTs to kill enemies while staying out of sight?

Serafen has good melee stats and works well as a barbarian using cipher spells to support himself. Just make sure Seraphen has high shock AR and stays away from the party.

If there are no enemies to flank that condition is considered true. When you become invisible (or after killing the last enemy) you lose aggro and there are no more enemies (they become just hostiles with no target).

I tried it on a dummy with an animist.

I tried to apply the DoT after Enfeebled and it stays under 15s for me (with 30INT)...

Strange... I didn't see Wildstrike working with FF and dots last 15s at best in my game.

Yeah, it opens new options for berserkers/tacticians and might help a lot vs Hauani if it breaks the merge and isn't affected by RES.

Of course you can play it in melee too with the right gear/abilities, stay alive using Unbending and become invisible from time to time to get back your resources. You can also flank multiple melee enemies using Persistent Distraction + Guardian Stance and trigger brilliant even without being invisible. But you shouldn't expect to be as effective or risk free as the sniper version. Anyway, you can see more details here:

An assassin/tactician sniper can solo everything with ease and doesn't require heavy buffing or infinite dots to kill enemies. The big ooze is the only tricky boss, however there's a very reliable (and relatively fast) method to kill it using the Mechanical Marvel and a few Tornado scrolls. There's always the paladin/troubadour, but I suppose you already know it - he can also shorten a lot the Hauani fight using Tornado scrolls. Paladin/forbidden fist is also a good candidate but he will struggle much more against Hauani. Paladin/soul blade can probably solo everything too if you don't mind doing shoot and run against Dorudugan.

You should try SC Forbidden Fist with high resolve - he can solo everything rather easily from the beginning to the end.

Devoted/monk with Scordeo's Edge works pretty well - lots of crits, free attacks, CCs. You can always switch to Scordeo's + Tuotilo's when you need more defense. Once you get Unbending Trunk you can even wear a light armor because you will outheal the damage from the enemies.