For a change i decided to play seriously a Dwarf Mindslayer.
In the past i played a few without reading any guide and wasn't really impressed.
So for this one i read a few things, apparently in order to do any reasonnable damage and get some resistance, the mindslayer need to have a bunch of sustain active due to the synergy between them requiring other sustains or you'll get only weak effect for each, letting then only few psi for the psi spells (the best one being mindlash)
Fortunately there's some psi skills that help refilling, but still in the end with all the required skills, that's a very lot of points you need to invest everywhere, difficult to specialize in such conditions.
Then one of the nice thing of the mindslayers is that they can "telephatic wield" a weapon, on top of the ones you're already wearing, and get your willpower/cunning replacing strength/dex for the damage/accuracy for it (good as mindslayers wants lots of willpower/cunning)
As they're not exactly great for health, i took a dwarf to help a bit.
Now all was good until i noticed that the "best damage spell", the mindleash was still dealing ridiculous weak damage despite i started to have some levels and maxed it.
Then reading from closer, to actually get the best of the spell, the "telepathically wielded" weapon must be a mindstar, yes, those weak damage things ... oh well, at least mindlash is good now, but still not impressed by the damage dealt when maxed in comparison to other classes i played at equal level.
After a rather boring time noticing that damage weren't all still not that good despite what i hoped and the conduit sustain joining my bunch of already enabled ones, i finally reached level 21 after completing all tier 2 dungeons and killed Urkis (that for once i found surprisingly easy despite i had only 35 lightning resist) i remembered that i forgot to get to the lake of nur to get my fortress running.
So i did and once reaching the weirdling beast, i noticed it had some nice skill "taint".
And what does taint does when it use it : it disable all your sustain back into cooldown.
Oh well ... but wait a minute, a mindslayer to do anything that is not ridiculously weak damage need those many sustain synergies , and so it began a game of me re-enabling sustains when they were available, while hurrying to heal (good i got the healing light from an escort) and regen as without sustain not only the damage is weak but the resistance are.
And when i was near to be fully online with my most important sustain enabled, "hey my friend, how about another use of Taint" , and back to square zero with pathetic low damage and resistance.
Oh and taint basically heal the beast for 75 health by sustain disabled apparently, so it was near full health each time it used it.
I decided to give up that character there as boring was too much boring, never going to play mindslayer again that's a given.