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