Here is the full list of all 11 Tomb Robbing with Friends achievements.
Play one game! You're gonna be rich soon!
Steal someone's treasure and deliver it.
Drop 15 treasure at once.
Play a 4-player game with everyone wearing the same outfit, name, and voice.
Steal and deliver someone's treasure, resulting in you winning the round instead of them.
Unlock 10 customization elements.
Unlock 30 customization elements.
Unlock 100 customization elements!
Win a game without being hit by traps or enemies even once.
Score 30 points in one round
Play with 8 players.