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