Its in .var/app/com.play0ad.zeroad/.local/state/0ad/log, removing it then entering 0ad will create new log.  

@FrankI've played and checked, working for me, I think you click: Learn To Play > Tutorial Happened to me too. instead of; Single Player > New Campaign > Tutorial > Start Campaign > Introductory Campaign. Upon completing just do Single-player > Continue Campaign/Load Campaign. Since you've complete the tutorial, you can redo it but 2x speed in case you haven't known that feature top right.

Ill keep looking into this! Thanks.   Originally I created the mod on my desktop and then used github desktop to upload it to git.  So I'm still trying to figure all this out.   @Atrik wasnt able to figure it out This is what I have on my desktop, but I dont have to download from git

Can't complete Introductory Tutorial, just says 'Available' after Victory and see the next one (Economy Walkthrough) but nothing else

Hi everyone! I am a newbie on 0ad and GNU-Linux but like it very much. I am having the same issue but with the Introductory Tutorial, y complete it but cannot play the next one Economy Walkthrough. After i complete it just appears 'available' and nothing on Economy Walkthrough. Tried a lot of things, installed it via Flatpak, appimage, sudo pacman... Also changing the tutorial json with 'complete': true etc and nothing. I am thinking if having an Nvidia GPU could be a problem... I would really appreciate some help, really stuck with these, Thanks everyone! Awesome work!