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