The Episode 4 - Closure Add-on for The Lions Song: Episode 1 - Silence has 23 achievements.
Unlock all connections in the gallery
Finish all achievements in The Lion's Song
Finish all achievements in Episode 4
Try to convince the policeman that you saw the error in your ways
Sweet-talk Frieda into telling you her name
Finish Episode 4
Finish All Episodes
Look into all compartments
Keep ordering wine
Distract Wilma
Try to acquire beer as Otto
Listen in on Nikic and Wurm
Check in on Rauch
Check all of Theo's scientific notes
Use the "decide again" feature