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