How to get Epic Games on Steam Deck

All-in-One: How to Add Non-Steam Games to Your Steam Library

Epic Games Store Review

How to Search & Download Free Games in STEAM Deck

How to install Epic Games Store on Steam Deck

Steam Deck: How to easily install the Epic Games Store launcher

Heroic Games Launcher gets another Hotfix to clean up more issues

Steam Deck, Epic, Origin, Ubisoft Setup

Sorry if already posted: After installing EG through proton you can add the games as non-steam games without issues. Was easier and faster for me, than using Heroic (Covers added with Steamgrid

How to Download And Install Games on Asus ROG Ally

Valve will let Steam Deck owners install Epic Games Store, Windows OS - Polygon