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