The point: ----------------------->
____________ you
You just missed it.
This isn't a "Give me tips to win fights"
This is "Most battles are at their core unbalanced since I'm supposed to abuse gimmick homebrewed systems to win them!"
Right and I don't agree. Unfortunately with this kind of thing it's impossible to disagree and not provide examples of the tools available that can be used to win these fights.
So you can say nothing, and let the person rant or agree with them and get a pat on the head, or take the risk of disagreeing with them but not use any evidence to back it up.
And the Op's post was full of inaccuracies - they mischaracterized the fight as "unavoidable", claimed the Duegar could all cast "infinite Mirror Image" (not true only Ghek can cast it and only twice based on the two scrolls he is carrying which you can steal from him and prevent him from using) and didn't provide any concrete examples of how it was overpowered against what he had available.
