https://bugs.winehq.org/show_bug.cgi?id=37571
--- Comment #3 from jre.winesim@gmail.com --- Not sure what you didn't understand, anyway:
Install your game as previously, follow the installation process until it hangs as you described it.
Then wait a few minutes (just to be sure).
Then open a terminal or console (that's a window where you can type commands. Check your distribution's help system/forum if you don't know how to do that).
Then type: killall EAProxyInstaller.exe
... and the game will be installed successfully.