Emoticons
ːTheLetterMː ːTheLetterIː ːTheLetterNː ːTheLetterOː ːTheLetterTː ːTheLetterAː ːTheLetterUː ːTheLetterRː
ːTheLetterEːxtra
Badges and Backgrounds
I won't show them here (for spoiler reasons), but the site below usually lists everything.
https://www.steamcardexchange.net/index.php?gamepage-appid-496660