Just picked the game up on sale and one super annoying thing that keeps happening is that every time I get an achievement or a new item I get a Steam notification in the corner that wont ♥♥♥♥♥♥♥ go away. I keep having to exit the game to get them to go away.

I give exactly zero ♥♥♥♥♥ about achievements or playing cards. I just don't want the notification taking up the bottom right corner of the screen. I tried to Google the problem and people keep talking about hitting ctrl+shift+backspace to bring up some menu, that doesn't do anything. Anyone know a way to stop these stupid notification from showing up?