Hello, I started trying to manually translate the game and found that there are parts where Diezel appears. Is there any way to make him appear? Or is it just leftover content?
No, I tend to leave the maps and a bit of programming stuff from the previous games in in case I need to reference them for whatever reason, though I've stripped a lot of that out working on 3 now for practical reasons. But the entirety of the first game, in terms of maps and a lot of code is in the second for that purpose. They take up almost no space, and I was under the mistaken belief that I couldn't have two copies of RPGMaker open at the same time for a while, so I thought that was what I was stuck with if I wanted to check old work or reuse some of it.
Long story short though no, none of that old CS1 stuff in GT is used, it was just there as a reference bucket for me (though there IS obviously one boar scene in GT, in the alley early on).
Glad to hear you're working on a translation though! What language are you working with? There's already one in Japanese and Chinese, and one in Spanish has been underway for a while, though I'm unsure of the progress there.