I've moved the @glitchdotcom bulk downloader over from a GitHub gist to a real repo, over on https://github.com/pomax/glitch-bulk-downloader, and folded in a community member's suggestions for also downloading archived projects.
Which makes a lot of sense. Those are your projects. Why did someone even have to remind me to include those??
Anyway, you may want to give that a new whirl if you already downloaded your projects before. Or if you wrote your own tooling, double check it includes archived projects, too =D