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