Catch 250 fish using rods.

Surrender the Music Box.

Deliver the Key.

Sell a total of $2500 worth of fish.

Have a full cargo.

Hear a Foghorn echo.

Use one enemy as an improvised weapon against another.

Multiclass into every class in one playthrough without asking Withers to change your character.

Kill a creature with falling damage.

Make the ultimate sacrifice: become a mindflayer to defeat the Netherbrain.

Reign with terror: take control of the Netherbrain and bend the world to your will.

Finish the game (with a heartfelt "thank you!" from Larian Studios).