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