• Установить Steam
• Активировать Proton
• Поставить LOTRO
• Установить https://github.com/Sirmentio/protontricks
• С помощью protontricks поставить vcrun2005 (чтоб исправить зависания при открытии LOTRO Store)

UseLegacyClient=false

I have just managed to get the store to load when running LOTRO from steam. When you start the launcher, click on the little down arrow icon on the top bar to open the launcher menu and select Options, then go to the General tab and at the bottom select 'Use Legacy Client (Windows Vista and prior compatibility)". On my system the ticks do not show in the selection boxes so it can be difficult to see if it is selected or not.

Log in and load the game. From the character selection screen you can access the store by the top right button (Get Points and Account Upgrades). It should ask you if you want to open the store in an external browser, click Yes and it should load your default browser/open a new tab if the browser is already running.

The legacy client uses the lotroclient_awesomium.exe rather than the lotroclient.exe when running the game, you can check with ps x | grep lotro in a terminal while the game is running.

I haven't been able to workout what proton is doing differently to regular wine to stop the store loading with the normal client, but this will let use access the store when running through steam and proton.