Here is the full list of all 23 Space Farmers achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Found the funny face mask.
Unlocked Franky in Attack Of The Vegtabots
Killed 3 chompys at once with potato bombs
Killed all the soldier bots in Cross Fire
Made it through the discotheque.
Didn't let the Pieosaurus die.
Made it through Bomb Hats without collecting all the clocks.
Carried the pig 1000 metres
Made it through The Grind without getting the weapons.
Killed 500 chompys
Got killed by a mine when not wearing the goggles in Helpful Chums
Found the final piggy.
Complete all the challenges
Made it to the end of game party
Killed more chompys than your friend in a game.
Spent some turnips.
Killed 100 chompys
Escaped The Grinder
Played as another character.
Got to the end of the game with no deaths.
Did all the challenges in 1 run
Made it through 'Pig Weapon' with one set of gloves.
Escaped The Extreme Grinder