Here is the full list of all 10 Kill Fish achievements.
Leave the level without a sword.
Use the sword the first time only on the lever.
To smoke all pipes in the game.
Throw the fat man into the abyss.
Withstand the attack of shells.
Complete level with the slugs without single falling.
Found all parts of the poem.
Completed the game.
Down from a roof without lowering the boat.
Finish the game without damage.