Here is a simple guide on how to get the hidden achievements in Romeow: To The Cracked Mars.
How to Obtain the Hidden Achievements
There are two hidden achievements in the game. you can get them as follow methods:
Go to spaceship without the battery 20 times on Earth (Any level on earth)
Stand still in Mars for 2 minutes (Any level on mars)
Romeow is a relaxing and charming puzzle game about a kitten who dreams of going to space. He will need to go through shuffled paths to be able to assemble his ship and achieve his goal.