we've been working on custom-keybinds for awhile, can't give a ETA but we're still completing work on it amongst other improvements!
edit: keybinds are now in !
We took ARCADE MIX offline as we just released a newer version of it - the episodic side demo UNBEATABLE [white label]! https://dcellgames.itch.io/unbeatable-white-label
When it's ready! We've chosen to give it more time to give it a lot of polish - you can see more details on it here: https://www.kickstarter.com/projects/dcellgames/unbeatable/posts/3160293