Here is the full list of all 18 Wait! Life is beautiful! achievements.
There goes the bridge...
Lose 35 people
Join the Cult
Listen to all of Rae's stories
Period
Save 35 people
Save 20 people
Listen to all of Ethan's stories
Lose 20 people
Save 12 people
Save a girl from being dragged down to hell by her father
Lose 13 people
"Talk" to your mom on the phone
Save five people
Lose five people
Beat Electronica
Screw work