Fuel Reserves
You filled the gas can up ALL the way
Chessica
You beat Jessica at chess
The Duality of Hat
You posed for two different fedora pictures
A Victimless Crime
You solved Mrs. Brewster's mystery
Ten Tickles
Hardcore Gamer
You won all the prizes at the Ocean City Boardwalk
The Hot 100
More Meat Than Sense
You bought a barrel
A Witch in Time
Temporal Oopsie
Predestined
You closed the Time Loop
Everything's a Sandwich If You Believe
Cleaning House
You drove enemies out of 23 Hilbert House rooms
No, Truce With the Fishies
A Well-Rounded Education
You passed all nine SIT courses (requires multiple playthroughs)
The Dark Side
The Prince of Tides
Freaky Frogday
You helped the workers of Haim Quarry
You Did the Monster Sash
You got a fully-decked out Monster Shack sash
Bad Dog(s)
Just Showing Off
You defeated the Ziggurat Goliath
Your Neck Will Go On
Esprit de Corn
You maximized morale in the Maize Maze
Jasper's Six
You executed a perfect heist
A Friend of Ours
You completed all of Don T's assignments
The Last Dance
Gabby saved the universe
The Forbidden Melody
Obie saved the universe
Bullet of Pure Love
Molly saved the universe
No Dogs Don't Prevent Oblivion
Barker saved the universe
The Umbraline Solution
Adams saved the universe
This Wrench Kills Machines
Simone saved the universe
The Bite Heard Round the World
Alphonse saved the universe
Somebody Else's Problem
The Milk of Human Kindness
You completed the game without fighting
The Gang's All Here
You received the hobo camp's highest honor
Cat Fancy
You unlocked every cat
Sanitation Engineer
You flushed every toilet