Castlevania: The Adventure/Stage 4: Castle

Stage walkthrough
The boss from the first stage is now a regular enemy! At least, it has very few health points.

Enemy list:
 * Animated armors
 * Armored giants
 * Ball-spitting heads
 * Scythe-throwers

Secret room
There is a wide room with a single enemy that throws scythes. The enemy is hard to dodge, but the secret room includes a whip upgrade.

In order ro reach it, climb the rope to the right, then jump off and land on an invisible platform. Right at the center of the room there is an invisible rope, too. Just climb up to the bonus room.

Boss: Dracula
The first part of the battle against Dracula is rather easy if the whip can shoot fireballs: just crouch on a platform at the same height as Dracula, and shoot.

After his human body is gone, Dracula will turn into a giant vampire bat. Stand on the platform where he appeared at the beginning of the battle; jump and crack the whip when the bat is approaching: the hitbox is slightly larger than the bat itself, it is enough to hit the tip of its wings.

Hard mode
Once you beat the game and see the ending credits, you can press any button and start a new game. Similar to Super Mario Bros., the enemies are tougher this time, and they deal double damage.