Here is the full list of all 20 It Takes Two achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
You reached a higher state of mind. Or at least some peace and quiet.
Release that tension at the root level.
Don't feed the animals! Or do, they're adorable.
Breathe some wind into your ocarina, my skyward princess!
Isn't it pretty? That's going on the fridge.
Now look who's extinct!
Guess it was time to cash out.
The truth was out there all along!
They had no way out.
All minigames found!
You did it! CO-LLA-BO-RATION!
Scurvy! Ye look smashing, captain!
Again? Keep track of your kids!
Took things a bit too far, didn't you?
Helltower? More like hello-from-up-here-tower!
Choo Choo!
Put on a show and die trying.
Shoot for the stars, literally.
Self-inflicted paparazzi.
It takes two to… torture.