Here is the full list of all 28 Tea Party Simulator 2015 achievements.
Activate the aviators.
Activate the snake.
Witness the zeppelin.
Witness the Red Baron.
Completed the first level.
You really aught to do something about that stabbing habit.
Let the chi flow through the spasticity of your hand.
This hand ain't goin' nowhere.
Yes, well ... I'd call you a buffoon too if you poured hot water on me. Indeed!
Activate the turnip.
Activate the top hat.
Activate the fish!
Activate the sunglasses.
Activate the calm book.
Flip the bird, if the bird were a fancy bird.
Completed the second level.
Completed the third level.
Completed the fourth level.
Completed the final level.
Use the dynamite.
Use a frag grenade to end your tea party.
Activate the monolith.
Witness the potato box flying through space-time.
Make a tea within a tea, or something.
Get an 'S' rank in every level, in both Mode 1 and Mode 2.
Get an 'A' rank in all Mode 2 levels.
Get an 'A' rank in all Mode 1 levels.
Why would you shoot ted?! He's your best and only friend!