Here is the full list of all 32 Nom Nom Galaxy achievements.
Unlock the second Gravlock
Discover 50 different flavours of soup
Unlock 10 Astro Pins
Chew 10 Galactic Gums
Unlock the first Gravlock
Defeat your first rival soup company
Play the game at 11:11
Blend and ship your first soup
Congratulations!
Complete the tutorials
Eat 10 different ingredients
Use the Hopper EX to kill a Shroomba
Complete 5 days in other players games
Help ship 100 cans of soup for other players
Earn a medal in 5 co-op challenges
Create a factory with every type of robot
Create and ship the legendary 'Nutrient Nova' soup
Create a factory with 5 soup machines that do not use any of the same ingredients
Unlock all available upgrades
Discover 100 different flavours of soup
Earn a medal in all Challenge types
Earn a medal in 5 Challenges
Earn a medal in 10 Challenges
Earn a medal in 20 Challenges
Achieve an Elite medal in any Challenge
Unlock 40 Astro Pins
Unlock All Astro Pins
Unlock the third Gravlock
Defeat all rival soup companies in the campaign
Defeat 5 Queens
Spend over 100,000 gold
Create a 100 piece factory in Conquest or S.O.O.P. Sim