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