Here is the full list of all 23 Super Splatters achievements.
Finish all the "Easy" events in the game
Explode 1,000 fireworks pods
Generate 5 different stunts with a single splatter
Reach a total of 500 stunts
Reach a total of 5,000 stunts
Explode 10,000 fireworks pods
Get 1,000,000,000 views overall
Do 200 Air-Strikes
Get 20 Mammoth explosions overall
Finish 10 "Combo Rush" events
Finish 10 Hard "Master Shot" events
Achieve at least 1 star in all events
Achieve 3-star rating for 10 "Master Shots" events
Get any 30 trophies
Generate 9 stunts with a single splatter
Achieve 8 different stunts in a single level
Chain a single combo through an entire hard "Combo Rush" event
Do more stunts than the 3-star rating of a hard "Master Shots" event
Do 5 slides with a single splatter
Kill the Sensei!
Have your splatter change color while in mid air
Throw fireworks pods off the stage
Throw a splatter off the stage