Script that adds a button for playing previous daily challenges. No, you don't get gold for playing a challenge that you missed.
Screenshot
Use script by running this line of javascript:
$.getScript('https://penguintoast.github.io/duelyst-previous-challenges/dist/duelyst-previous-challenges.js')You can either paste the above line into the DevTools console, or add it to the end of duelyst.js.
Open with ctrl+shift+i or cmd+opt+i in client, f12 in browser, then paste code into console and hit enter.
Windows: C:\Users\<username>\.counterplay\duelyst\<some_version>\resources\app\src
Mac: ~/.counterplay/duelyst/<some_version>/Duelyst.app/Contents/Resources/app/src
You'll need to paste the line in again every time Duelyst is updated.