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