⬤ Installed standalone DarkWinter version from Sunborn website(If you don't have it you can get it there: https://gf2exilium.sunborngame.com/)

⬤ Installed HaoPlay version from Steam

⬤ Delete EVERYTHING inside HaoPlay folder EXCEPT for folder itself(folder should be named "EXILIUM")

⬤ Move EVERYTHING inside DarkWinter folder to your HaoPlay folder

⬤ If you did everything correctly you should now be able to launch your DarkWinter version using HaoPlay version(This is why this guide has non native in the title)

To put it simple you gain access to almost everything Steam support for this game as in the native DarkWinter|HaoPlay version EXCEPT for:
⬤ Steam payment system through Steam wallet and other payment options(You still retain standalone client aka Mica's payment system if you exactly followed my guide)

⬤ Steam updates and verifying files through Steam

First do NOT verify files through Steam because it's gonna replace your DarkWinter files with HaoPlay files, if you want to verify your game files do it inside the game before logging in or in the launcher that's in the game files under the name of "PCLauncher.exe" and second i'm not sure if Steam updates to the game wouldn't replace some or even all files but so far all of the updates were done inside the game itself so this shouldn't be a problem if Mica is gonna keep this up