Here is the full list of all 59 Gerda: A Flame in Winter achievements.
Completed the Tutorial
Found the papers in the chicken coop
Discovered Esther and Sophia
Discovered the Smuggler's Den behind the inn
Broke into the clinic
Gathered information in the Sunday mass
Gossiped with several banquet attendees
Gained audience with Algot Vestergaard
Broke into the factory
Discovered the train schedule
Caused a distraction at the station
Escaped the train station attack
Lived to tell the tale
Got drunk at the banquet
Scratched the Gestapo car
Dug through the trash
Tried to pick up the knife
Supported Esther in fixing the radio
Tried to pet the cat
Didn't wake Harald in the clinic
Found the note about beans
Used Gerda's nursing skills to treat 5 people or more
2 or less Relation with all factions
5 or more Relation with all factions
7 or more (out of 10) main characters died
2 or less (out of 10) main characters died
Achieved 7 or more in Relations with all factions
Used up all your matches
Won the card game
Took every opportunity to spend time with Margit
Took every opportunity to spend time with the Resistance
Took every opportunity to spend time with Reinhardt
Took every opportunity to spend time with Esther and Sophia
Unlocked all character secrets
Unlocked all historical facts
Completed the tutorial in Liva's story.
Formed a new resistance group at the inn.
Completed a mission with your new group in Liva's story.
Gave the best gift to the team member who trusted you the least.
Escaped the ambush in Liva's story.
Chose to be very particular about your alias three times in a single playthrough.
Completed a high-stakes mission in Liva's story.
Kicked the snitch onto the train tracks, causing his untimely demise.
Listened in on Gerda's conversation at the mailbox.
Got Peter to open up to you four times.
Got Anders to open up to you four times.
Got Bente to open up to you four times.
Got Kesse to open up to you four times.
Got all team members to open up to you four times.
Got your revenge on Toft.
Eliminated Eriksen.
Completed the final mission in Liva's story.
Led your team with a strong sense of duty.
Led your team with a fire and brimstone approach.
Led your team with a caring attitude.
Unlocked all historical facts in Liva's story.
Got every possible character killed in a single playthrough.
Interrupted the Schalburg party with a fiery distraction.
Finished the snowman.