Here is the full list of all 32 SpongeBob SquarePants: Battle for Bikini Bottom - there are Rehydrated achievements worth 1,000 gamerscore.
Defeat Jellyfish King
Collect 10 Golden Spatulas
Collect everything in SpongeBob's House
Defeat 100 robots as Sandy
Defeat 100 robots as Patrick
Defeat 100 robots as SpongeBob
Clear all the Ski slopes in Sand Mountain
Find all the Golden Spatulas in Bikini Bottom
Find 15 of Patrick's Socks
Finish the main missions of Goo Lagoon
Complete Squidward's Mission in Jellyfish Fields
Complete Mrs Puff's Mission in Downtown Bikini Bottom.
Finish the main missions of Rock Bottom.
Complete the Rolling Ball Puzzle in Mermalair.
Find all the Lost Campers in Kelp Forest.
Reclaim the Flying Dutchman's ship in the Flying Dutchman's Graveyard.
Find all Golden Spatulas in the SpongeBob's Dream level.
Destroy at least one type of every robot in the game while playing the campaign. Bosses don't count.
Defeat Prawn in the Mermalair.
Defeat the Flying Dutchman.
Defeat Robo-Plankton and neutralize SpongeBot SteelPants' Brain.
Talk to Squidward 10 times as SpongeBob.
Get 25 Golden Spatulas.
Get 50 Golden Spatulas.
Get 75 Golden Spatulas.
Get all 100 Golden Spatulas.
Find half (40) of Patrick's Socks.
Find all (80) of Patrick's Socks.
Defeat Robo-Sandy in the Poseidome.
Defeat Robo-Patrick in the Industrial Park.
Defeat SpongeBot SteelPants in the Chum Bucket Lab.
Get 100% completion. All golden spatulas and all socks.