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