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