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