Here is the full list of all 19 Sophie's Guardian achievements.
Kill your first doll.
Kill 750 dolls.
Kill 5,000 dolls.
Kill 500 porcelain dolls.
Kill 500 rag dolls.
Kill 500 wooden dolls.
Kill 1,000 dolls with headshots.
Complete Guardian Mode in the Early Access version.
Survive 3:00 minutes in Gunslinger Mode.
Survive 5:00 minutes in Gunslinger Mode.
Survive 7:00 minutes in Gunslinger Mode.
Place 1000 dolls in Puppeteer Mode.
Die by receiving damage only from wooden dolls.
Kill 5 dolls in 2.5 seconds.
Die 50 times.
Kill 500 club dolls
Burst 300 balloons
Burst 4 different balloons in a single match
Kill 1000 dolls with power-ups