Making things even easier for the upcoming Steam Deck, the unofficial Heroic Games Launcher for Epic Games can now be navigated with a gamepad. Testing it out today, it works really nicely too. Just goes to show what amazing things a community can do, even when Epic doesn't support Linux directly with their store.
You even get a nice on-screen keyboard show up for text input - very nice.
Other improvements in the Heroic 2.1.0 release include the app remembering window size and position, CTRL+F shortcut for the search bar in the library, a new Wine Downloader feature to easily get new versions of Wine-GE and Proton-GE, the app will check the status of Epic's servers and give warnings on issues and a few other assorted UI updates and bug fixes.
Work is still in progress to support Flatpak / Flathub, once that is done installing this on a Steam Deck or any other Linux distribution should be super-simple.
You can find it on GitHub.