Here is the full list of all 40 Catsapults achievements.
Get close to a kitty.
Kitten #1
Kitten #2
Kitten #3
Kitten #4
Kitten #5
Kitten #6
Kitten #7
Kitten #8
Kitten #9
Kitten #10
Catch a leprechaun!
Catch another leprechaun!
Catch one last leprechaun!
Use a catapult.
Find a key.
Destroy a clover.
Use a button.
Match some cards.
Smack into a wall.
Jump in water without a raft.
Use a teleporter.
Get a raft.
Catch 23 cats on one level.
Unlock super build mode.
Smash a flower.
Run from a zombie.
Smash a crate.
Collect 10 coins on one map.
Get sent to the dungeon!
Do build mode.
Step on a mine.
Check out the credits.