After reading mother's letter on the wharf, Louis says "language", but there's a typo in the subtitles - 'langage'.

By the way, I'm a professional game localization specialist and I really like your game. If you need my service in the future, I'm eager to collaborate.

Here's a typo in Russian subtitles. It's the ending, where you decide to follow Adams, but quit on her before getting drunk.

It should be "я решил", not "мне решил".

It changes a lot. It can lock or unlock a lot of content, really tailoring the story based on your choices.