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