Hey there!
There is quite a few things regarding this so lets address each part.
First of all, definitely no point in you making it now, as episodes will be quite changed in the rework, same as I told to anyone thinking about translating it now.

Secondly, I used to have walkthroughs (both a pdf doc and an ingame mod) but I dropped them both for multiple reasons. I prefer players playing it by themselves without any help to properly try stuff out and see what influences what, as it always brings me joy when someone goes "wait, you had X say that here? For me she never appeared!". Now this is also kind of hypocritical as I play some games with WTs myself, but my view still stands.
The bigger "issue" however is related to how much WT mod/pdf says or knows. With this I mean that some choices could have much later impact. With this I mean that although rare, there can be circumstances where when I write dialogue I go "huh, would be fun if you saying this much earlier would make her react a tiny bit different now", say MC remembering a girl talk about something before and chiming in, and her appreciating that. So I might have a value the game tracks, but we don't know (including me!) that later that could lead to lets say +1 relationship point with X girl. 
And that's why I stopped myself, felt weird for me to make my own dev approved WT, yet later on, someone following my own guide could end up missing a point or two, purely bcs I get some idea in future how to use a previous choice for extra dialogue etc.

Overall, those are reasons why I'm not that keen on them at the moment. Didn't want to write a simple yes/no so hopefully this explains a lot. And yes, it's mostly that (correct answer +/- points) in addition to those very few and rare future points (sometimes if MC does the same choice, you might get/not get points depending how many you have in total with that character).

same as here 0.4

Hehe 😊😊
(Downvotes incoming)

Thanks, will do!

I have no idea what you mean? Not sure what the "activate update" is for?

Nope, the game won't be harem ^^

Nope! She is just a side character ^^

Not sure "truce" is the right word, but yea, we did a small collab together. Falazio appears in Eternum too ^^

Nope, but you probably didn't get her to get to the beach ^^

In current ep1-4 you dont have any such point of choosing yet ^^
And in future updates, while not yet 100% so don't quote me on it, idea is to "lose" one by one girl by choices/denying them/relationship points throughout regular play. Maybe if you manage to have multiple even through all that I could make a screen where you choose. But yea, first option I mentioned is my way I'm aiming for.

There are some different options in terms of rendering. Fates Collide uses honey select 2 / studio neo while other games can use honey select (1), daz, koikatsu or sometimes other applications. I would reccomend looking into different ones and seeing what you like more as well as what can run well on your pc. Good luck on your creation!

Unfortunately, I have no translations available for the game at this moment. Maybe in the future!

If there is no crash message in Renpy style, then it's on your side.
One of only things that come to mind is possibly pc thinking it's a suspicious file, it can happen rarely and randomly with some games in Renpy that use a custom launch icon. 
- You could try -> deleting the game and trying to reinstall/reunzip
- Try installing in a different folder (Desktop)
- Pause any Antivirus that might block it and see if it can launch

It happens very very rare and there is no simple universal solution if that's the case.

I'd actually like to say but I cannot find the source anymore, think it was one youtube free music channels that got hacked/terminated :/

non harem usually means that you can get like 1 or 2 sex scenes with every character but at some point you will have to decide which character to focus on. ie: fun to play for the first few chapters, then fall off HARD once you have to "pick." A good example of this is Leap of Faith. Fantastic game up until you have to pick one girl.

Yesn't!
In the end you can only date 1 girl yes, but you aren't punished a lot early game (and this is all still early with latest Ep4) if you are checking the other girls and their paths at the moment. 
As the game progresses you'll have to slowly start focusing on one girl, as it will be harder and harder to keep highest points and paths with all girls at once ^^

Some folks fantasize about one woman telling them their choices are always wrong, others are more masochistic and prefer a council of women to sh*t on their lifestyle and drive them to an early grave.