Castlevania: The Adventure

In the first level, do not hit the first candle. Now when you come to the 11th candle, hit it to reveal a 1-Up.

Much like other Castlevania games, you can keep on playing with harder difficulties after the credits roll. Once 'The End' appears on the screen, press the A button to play through the game again with damage from creatures increased twofold. This will continue to increase with each subsequent loop through the four stages. - Stage 5 to 8: Enemy damage x2- Stage 9 to 12: Enemy damage x4- Stage 13 to 16: Enemy damage x8- Stage 17 to 20: Enemy damage x16 (Instant Death) Clearing Stage 20 will not increase the difficulty any further. However, your score and the Stage number will still increase.

You must climb the ropes to get through the level. The second to last rope, on the right hand side of the screen, leads to a platform with a tree stump and two graves with crosses visible. If you climb up this rope, you can continue through the brick wall at the top. This leads to a hidden room with four power-ups.

In the second part of the stage, where you have to choose between between ropes, go right and then left. You will enter a room where you go down stairs and giant eyeballs speed towards you. Kill an eyeball while it's on the middle step. Once done, a hole will open up. Climb down it for power-ups.