Here is the full list of all 50 Roman's Christmas achievements.
Reach the final ending
Get the cards right, again
Continue searching
Face Thrivey's death
Stop searching
Face Herrin's death
Reveal the truth of St.Isaac's Church
Face Vincel's death
Confront Vincel
Cheat Vincel into confessing
You are Elegant now
Face Peter's death
Face Lunic's death
Become the killer
Face Ianis' death
Find out what Vincel doesn't eat
Eavesdrop three times
Rub Anzox's belly
Vincel got stuffed with Tsarzn's socks
Anzox got hit in the head
Have a nice dinner
Miss the dart clock
Agree to write a love letter for Peter
Hit the bullseye
Hide the truth from Herrin
Face Shawn's death
Face Kane's death
Get the cards wrong twice
Let the ladder fall
Hear another story from the bard
Hear a story from the bard
Welcome to the tavern
Break Anzox's lute
Find Elena guilty
Find Elena not guilty
Mistake Elegant's gender
Get the cards right twice
Refuse Tsarzn
Let Lunic talk about the King's feast
Hear everyone out
Search for the good part
Look in the mirror
Dream every dream
Read the whole book
Get the cards wrong, again
Reach 100 mistakes in total
Not a single mistake!
Check the candles multiple times
Check the mugs multiple times
Get drunk