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