From having updated the mod I can tell you that there are several choices that can lead to Game Overs, so having the WT can help.
thats all the choices are tho "fake choices" you click one and leads to game over. rollback and click other options instead so the "Choices" are "fake" or choices for "routes" that eren't actually in the game, you will know this the moment you click a "wrong" choice its literally impossible to play this beside the linear path the game wants you to because the "choices" lead nowhere besides insta gameover or all options leading to the same scene
the mod is great but not for the wt part but for everything else it has. My opinion of the walkthrough part will greatly change if the dev ever adds the other routes or if karma ever becomes functional as in used or tracked (which is another thing that is good about the mod it removed all mention of the "karma system" since its pointless anyways. not sure if your version does that to or not..), but i'm not holding my breath on that one LOL
Anyways my OP was just to assure the other poster they won't actually miss anything playing without a walkthrough (i know alot of people won't even give a game a try if it doesn't have a walkthrough) so mostly just putting their mind at ease since they can't use a walkthough their FOMO won't trigger because theres nothing to miss
EDIT: don't get me wrong thats not me trying to say the mod in pointless in any means and it is appreciated that you do keep it updated