How?
First. download the dawn of corruption HTML
Second. Download joiplay if you don't already have it downloaded
Third. Click the + button and use the HTML file for the executable
(The rest doesn't matter but it's always better to fill it out, incase you use joiplay for more than just dawn of corruption)
Were you able to update to the 0.6.5 version as well? I'm kind of lost on how to do that, that way i don't lose my achievements.
No I haven't, I'm not sure how to update it without losing progress.