Ah! Well, those aren't really typos or anything, but nonetheless grammatical in nature... mostly. Since i don't know if this has been already mentioned elsewhere, lemme just put the ones i distinctly remember here (and for our convenience, i looked them up in the questtext.gd)
in "MainQuestFrostfordMainOrder" there is the one i noticed the most. The Order mage says "Oh right,you is the one we want to deal with that one issue..." Which stems from the use of $he, which gets turned into 'you' instead of 'he' because it runs through globals.player.dictionaryplayer(). Maybe another variable is needed, like $3he for third-person-mentioning of the player? i'm sure i noticed it somewhere else in the quests, too. and even though i can't remember where, i guess it CaliGoodEnd, because in there is "Mom, Dad, this is $name. $He’s been letting me stay at $his mansion and $he helped me find my way back." And the same, i guess, in CaliGoodEndKeep, too, even though it doesn't show, because " And, well, I guess I do owe $him for all this." just sounds like she suddenly addresses the player again. This may be somewhere else too, but i don't remember it. :)
then in "MapleFlirt": "... gives you no choice but to stay standing leaning up against the wall, but it seems ..." sounds weird, but not being a native speaker, that might just be me. or maybe its missing a comma? o.0
then in "MainQuestFinaleGorn", there is a 'a' missing. "...despite the absence of their leader, considerable number of Kel'tor's clan went into hiding..."
and i was shocked, when in "MainQuestFinaleGoodChoiceLeaveGarthor" you toss the poor bastard to his death o.0 "You strip Garthor and his orcs of their equipment and toss them over a cliff before continuing on your way." This should really be a "it" instead of a "them" ;)
i hoped that helped, further good luck with that, i highly enjoyed playing it (even though i used a walkthrough in order to not miss out on special characters :) )
edit1: Version 0.5.18c
edit2: while looking through "items.gd", i also found "Living armor" and in its description :"An unearthy semi-living object which can be weared." should be "An unearthly semi-living object which can be worn." Not sure, but i think i saw the item ingame, too, but wasn't really interested.
eidt3: whats with all the edits? -_-
anyway, i just noticed that in the small logs on the side, when someones stress-level changes, it should be "has become mildly stressed" (same with considerably stressed, of course) instead of "has became" :)