Here is the full list of all 28 Tea Party Simulator 2015 achievements.
Use a frag grenade to end your tea party.
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.
This hand ain't goin' nowhere.
Let the chi flow through the spasticity of your hand.
Make a tea within a tea, or something.
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.
Activate the turnip.
Activate the calm book.
Activate the snake.
Activate the aviators.
Witness the zeppelin.
Witness the Red Baron.
Completed the first level.
Activate the fish!
Activate the sunglasses.
You really aught to do something about that stabbing habit.
Activate the top hat.
Completed the fourth level.
Completed the final level.
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.