Here is the full list of all 63 AquaNimble achievements.
Get a chain of 900 or more
Get a chain of 500 or more
Get a chain of 750 or more
Get healed 100 points of health
Destroy 50 dragons
Beat the Atlantic campaign
Beat 3 campaigns
Use 50 specials
Die 250 times
Collect 1 million stars
Destroy 10 Spinning Shooter Skulls
Complete any level using a different skin
Kill 10,000 enemies
Amass 1 million XP
Amass 2 million XP
Amass 5 million XP
Amass 100,000 XP
Beat the Arctic campaign
Destroy 20 cup creame clown cars
Beat the Pacific campaign
Unlock cat mode
Complete any campaign without using a continue in arcade mode (1CC)
Defeat Tridemodan
Defeat Eyeceratops
Finish the instructions
Get an extra life from points
Get hit by 100 projectiles without taking damage
Defeat Sonarus
Die 100 times
Defeat Predusa
Collect 50,000 stars
Defeat Crustaculous
Unlock a Vessel
Go up a rank
Defeat the second giant boss
Make it through any level's shark section without taking damage
Use 10 giga charge shots in a single level
Light 1,000 enemies on fire
Play a forever abyss campaign
Kill 2,000 enemies
You beat a level
Defeat Ventronaship
Kill 500 enemies
Kill 20 flesharks
Get a chain of 100 or more
Die once
Play a daily campaign
Unlock all vessels
Die 1,000 times
Die 500 times
Get to rank 20
Kill 100,000 enemies
Kill 1 million enemies
Beat a daily campaign
Beat a forever abyss campaign
Beat a level in pacafist
Collect all fuel cans in a bonus stage
Get a chain of 1,000 or more
Defeat 10 tragons
Complete a campaign on nightmare difficulty
Complete a level without dying
Have 5+ bombs