It's not specific to 2.5 but dual wielding with elemental weapons is still broken. What happens is that if your main hand is an elemental weapon, equipping a second weapon, physical or elemental, disables the innate dmg of your main hand. So dual wielding with a main hand elemental weapon actually d...

I don't really know if it's a bug or not, but it's at least unintuitive : in the assassin Psionic skill tree, Cognition doesn't count itself for the cognition total, while it is technically a psionic skill

I do not know if it came with 2.0 or was present earlier, but dual wielding with an elemental weapon in main hand is broken, at least with the assassin. With classic claws in main hand (physical), the second claw simply adds nothing damage-wise. However, with an elemental weapon in main hand, when y...

Is the bonus spell damage from spell focus/Energy additive or multiplicative with %spell damage from items ? And Is the bonus spell damage from spell focus/Energy the one shown in synergies on some spells, or is it a different bonus ? Spell focus + Energy is the one shown in synergies and is multip...

Is the bonus spell damage from spell focus/Energy additive or multiplicative with %spell damage from items ?
And Is the bonus spell damage from spell focus/Energy the one shown in synergies on some spells, or is it a different bonus ?

Is the res cap for minions still 50%, or can they go to 75 % ?

And do they still get 15% res per base skill point (capped at +75%) ?

It's good to know, thank you.
And thanks for the handbook obviously

How does AR work with mercs ?
I noticed you never suggest MO-ing some AR, and when I tried it, it seemed like their AR was unaffected. On the other hand, their base AR seems really low (around 2k).
Is there no way to increase it ?

Do proc (chance to cast) have the same cooldown as the skill they proc ?
And if you have several proc of the same spell, do they have separate cd, or do they use the same ?

Is "Grit" (https://docs.median-xl.com/doc/class/hirelings) from the act 2 mercenary merely physical reduction, or global damage reduction ?