No missable achievements (plus 20 unknown)
Sign in with Steam or Xbox to track your progress, and:
Complete Chapter 1.
Find the hidden picture in Chapter 1.
Complete Chapter 2.
Hit the unbreakable emergency glass with the hammer three times.
Complete Chapter 3.
Complete the finale.
Listen to all of the bartender's disclaimers without skipping any.
Experience every excerpt from Newton's fanfiction.
Find the hidden picture in Chapter 2.
Perform a toast with the mug filled to each level.
Check yourself out in the mirror.
Find the hidden picture in the finale.
Explore the sleeping plant for evidence of a previous meal.
Help the sleeping guard catch the centaur.
Get kicked out of Newton's yard in three different ways.
Set the correct combination for the Vitruvian sign without first finding the clue for it.
Reset your progress on a chapter you've 100% completed.
Find the hidden picture in Chapter 3.
Dodge Lupin's laser shots until he runs out of one-liners.
Start up the game before a certain other time-traveling adventure game was even released.