Cheat mode:
Collect the following objects in order at the start of the game: cupcake, hammer, globe, apple, and faucet. James Pond may now enter any door and is invincible. Note: Falling off the screen will still harm your character.

Unlimited lives:
Collect the following objects in order at the start of the game: lips, ice, violin, earth, snowman.

Level select:
Type littlemermaid to enable level select. Press L and use [Left] or [Right] to choose a new level. In other versions of the game, type The Little Mermaid (case-sensitive) to enable level select Then, press C to skip to the next level.

Alternatively, start the game with the robocod /rec command line, where the level number is 01-xx.