Here is the full list of all 47 Splasher achievements.
Right time, right place
Go Splashteam
Complete the game in Standard mode
Complete a level without jumping
Two Splashers in the same place? Impossible.
Get your first Gold Medal in Time Attack
Why is it always me?
You rang milord?
You're never going to keep me down!
Get your first Medal in Time Attack
Off to a flying start
Get Bouncink
A bird with two stones
At least I'm not the only one
Give yourself to the Dark Side
All in a good cause
Complete a level without dying
Jump and you're history
699
Mashed Potatroopers
Lasers are my calling card
A close shave
A good Potatrooper is a drowned Potatrooper!
You should have held that door!
Get Water Stickink
Fries anyone?
A good Potatrooper is a dead Potatrooper!
I get knocked out, but I get up again!
A friend in need is a friend indeed
Rescue all the Splashers from a level in Standard mode
It's all going splendidly
Get Water
Rescue all 154 Splashers in Standard mode
Complete all the quarantine areas
Get your first Platinum Medal in Time Attack
Complete a Selfish Speedrun
Complete a Standard Speedrun
Complete a Gotta Catch'em All Speedrun
Get your first Medal in Speedrun
Get your first Gold Medal in Speedrun
Get your first Platinum Medal in Speedrun
Complete a Speedrun without dying a single time
Get all the Bronze Medals in the game
Get all the Silver Medals in the game
Get all the Gold Medals in the game
Get all the Platinum Medals in the game
Get all the Achievements. After that, you are definitely one of the best players on the planet, perhaps even the best ever! Continue to prove it in the leaderboards!