Castlevania: The Adventure/Secrets

Secret Extra Life
On the first stage, do not strike the very first candle in the stage. If you leave this candle alone, then the 11th candle of the stage, found in the row of screens above, will provide an extra life.

Secret Rooms
Each stage in the game contains a secret chamber that cannot be entered by conventional means. These rooms may require that you pass through otherwise solid walls to access them. Others require special tricks. These rooms typically contain whip upgrade orbs and extra lives. Here is a catalog of each room.