Here is the full list of all 83 77p egg: Eggwife Playtest achievements.
Complete Apartment on Flaccid or higher difficulty.
Complete Apartment on Semi or higher difficulty.
Complete Apartment on Hard or higher difficulty.
Complete apartment on Knotty or higher difficulty.
Complete Apartment on RAGING.
Complete Apartment on Dysfunction.
Complete Pissco on Flaccid or higher difficulty.
Complete Pissco on Semi or higher difficulty.
Complete Pissco on Hard or higher difficulty.
Complete PISSCO on Knotty or higher difficulty
Complete Pissco on RAGING.
Complete Pissco on Dysfunction.
Complete Sewer on Flaccid or higher difficulty.
Complete Sewer on Semi or higher difficulty.
Complete Sewer on Hard or higher difficulty.
Complete Sewer on Knotty or higher difficulty.
Complete Sewer on RAGING.
Complete Sewer on Dysfunction.
Complete Sewer Depths on Flaccid or higher difficulty.
Complete Sewer Depths on Semi or higher difficulty.
Complete Sewer Depths on Hard or higher difficulty.
Complete Sewer Depths on Knotty or higher difficulty.
Complete Sewer Depths on RAGING.
Complete Sewer Depths on Dysfunction.
Complete Farm on Flaccid or higher difficulty.
Complete Farm on Semi or higher difficulty.
Complete Farm on Hard or higher difficulty.
Complete Farm on Knotty or higher difficulty.
Complete Farm on RAGING.
Complete Farm on Dysfunction.
Complete Factory on Flaccid or higher difficulty.
Complete Factory on Semi or higher difficulty.
Complete Factory on Hard or higher difficulty.
Complete Factory on Knotty or higher difficulty.
Complete Factory on RAGING.
Complete Factory on Dysfunction.
Complete Factory Ruins on Flaccid or higher difficulty.
Complete Factory Ruins on Semi or higher difficulty.
Complete Factory Ruins on Hard or higher difficulty.
Complete Factory Ruins on Knotty or higher difficulty.
Complete Factory Ruins on RAGING.
Complete Factory Ruins on Dysfunction.
Complete M77 on Flaccid or higher difficulty.
Complete M77 on Semi or higher difficulty.
Complete M77 on Hard or higher difficulty.
Complete M77 on Knotty or higher difficulty.
Complete M77 on RAGING.
Complete M77 on Dysfunction.
Complete Part 1 on Flaccid or higher difficulty.
Complete Part 1 on Semi or higher difficulty.
Complete Part 1 on Hard or higher difficulty.
Complete Part 1 on Knotty or higher difficulty.
Complete Part 1 on RAGING difficulty.
Complete Part 1 on Dysfunction difficulty.
Make yourself a cup of coffee.
Make 77 cups of coffee.
Make a none cake.
Pee 77 gallons of pee
Get a kill while in mid-air and upside down.
Leave your oven on by the end of the apartment level.
Get a blob of man-seed in your mouth.
Make a cake while you're dead.
Flush a human down the toilet.
Take 77 individual poos
Eat 77 food items
Blow up the petrol station
Fire the ""Shot""gun 77 times.
Die 77 times.
Press W 7777 times.
Die as a result of eating a poo.
Complete part 1 as a vegan.
Complete Part 1 without being responsible for killing anything.
Complete Part 1 leaving no survivors.
Eat something that's been up your butt.
Quit from the main menu after 77 second of starting the game.
Collect all the collectables in part 1.
Unlock all the bonus levels from part 1.
Complete Cumbubblingham on Flaccid or higher difficulty.
Complete Cumbubblingham on Semi or higher difficulty.
Complete Cumbubblingham on Hard or higher difficulty.
Complete Cumbubblingham on Knotty or higher difficulty.
Complete Cumbubblingham on Raging.
Complete Cumbubblingham on Dysfunction.