Here is the full list of all 44 Diaries of a Spaceport Janitor achievements.
finish the game
transfer the skull curse
drink poison
play 10+ minutes every (real-world) day, 9 days in a row
incinerate one of each tier-one currency
stay inside all day
get your luck index below -666
collect enough blue gems
return to the sewerdungeon
peruse the market's wares
dank....
sell an item for more than 50 credits
gain 200 MC in one day
parkour out of the map
get mugged 3x in one day
trade with Shifty Sallamot
get a tablet piece from Rhiande
lose all your achievements
sell a mythic spellswatch
get a random achievement from the merchant
collect every trading card
start the day poor, end it poorer
lose 200 MC in one day
get your luck index over 500
incinerate 50 pools of vomit
feed 5 dirt to dirt girl
buy river weevils
worship every goddess in the same day
eat an item off the ground
sell an uncommon spellswatch
explore every area
get your luck index over 100
sell a rare spellswatch
complete one week
get the first tablet piece
sell a common spellswatch
incinerate 100 items
stay out late on Theday
get your luck index below -100
complete one day
get cursed