This is probably is not a part of you plug in but I was wonder if you knew of a way to open the Steam Overlay from Blueprint? I know the player can open it by pressing SHIFT + TAB.
I am putting a button on the main screen of the game and I am trying to figure out how the button will either open the overlay so they can see their Achievements or it will take them to their achievements web page on the Overlay like your node takes them to the workshop page.
