Here is the full list of all 40 Ball-it Hell achievements.
Reach score 100 in a game
Reach score 500 in a game
Reach score 1,000 in a game
Reach score 2,000 in a game
Reach score 3,000 in a game
Reach score 5,000 in a game
Reach score 7,000 in a game
Reach score 10,000 in a game
Killed 500 enemies in total
Killed 1,000 enemies in total
Killed 3,000 enemies in total
Killed 5,000 enemies in total
Achieve a combo of 5
Achieve a combo of 10
Achieve a combo of 15
Achieve a combo of 20
Achieve a combo of 30
Kill more than 3 enemies by one shot
Kill more than 5 enemies by one shot
First pass trial mode
Pass trial mode with full HP
Use basketball trainee character pass trial mode
Pass trial of all characters
Play basketball trainee character once
Unlock all characters
Reach score 15,000 in a game
Achieve a combo of 50
Reach score 20,000 in a game
Reach score 25,000 in a game
All characters reach three stars
Laser Eye reach three stars
Basketball trainee reach three stars
Hitter reach three stars
Giant Killer reach three stars
Tank reach three stars
Katana reach three stars
Bomb maniac reach three stars
8-ball reach three stars
Executor reach three stars
Meow Meow reach three stars