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