Here is the full list of all 17 Jelly Wants More achievements.
Get a pink jelly
Get a red jelly
Get a square jelly
Get a cat jelly
Get a purple jelly
Get a cherry jelly
Get a historical jelly
Get an alien jelly
Get an energy jelly
Collect the whole story about every girl
Unlock all girls
Block the whole field
Complete 25 rounds
Get a cherry jelly (hard)
Get a historical jelly (hard)
Get an alien jelly (hard)
Get an energy jelly (hard)