There is a secret room in a first area of the game this is how you find it.
How to Find the Secret Room in Starting Area
You will need the pickaxe for this, so play the story tell you get it.
There is a stair case near were you begin. Go to the top of it.
The wall right in front of the top of the stairs is were the room hides, if you walk up to it you will see the prompt to clear debris.
Once you clear it there will be a table inside with some blue prints.
Rejoice for you have found the secret room!
Thanks to Pexie for his excellent guide, all credits belong to his effort. if this guide helps you, please support and rate it via Steam Community. enjoy the game.
