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.
All minigames found!
Scurvy! Ye look smashing, captain!
Don't feed the animals! Or do, they're adorable.
Took things a bit too far, didn't you?
Again? Keep track of your kids!
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.
They had no way out.
Shoot for the stars, literally.
The truth was out there all along!
You did it! CO-LLA-BO-RATION!
Release that tension at the root level.
Helltower? More like hello-from-up-here-tower!
Choo Choo!
Put on a show and die trying.
Self-inflicted paparazzi.
It takes two to… torture.