Castlevania: The Adventure/Stage 1: Forest

Stage walkthrough
Enemy list:

Secret room
There is one secret room in every stage of the game.

The first secret passage is when you see tombstones for the first time, after two rooms with falling eye globes. Just climb the rope all the way up in the wall. Collect the items and power-ups in the bonus room.

Boss
The boss battle starts when Christopher Belmont collects the shiny sphere.

Just hit the armored warrior with the whip; he is immune to fireballs. Before he closes Christopher in a corner, climb up the platforms and jump over the enemy.