Level 1 Locate the third set of rolling eyes. Climb the rope into
the ceiling.
Level 2 Locate the bridge. Continue moving downward until reaching
a location where rolling eyes are falling to the right with stairs
leading in the same direction. Destroy one of the eyes so it explodes
on the second step from the bottom. Fall down the small hole that
is created by the explosion. Climb down the invisible rope into
the bonus room.
Level 3 Just after escaping from the third set of spikes, a room where
your character is in a narrow passage on the left with a solid
wall to the right will appear. Climb the rope almost to the top,
then jump off to the right and through the wall.
Level 4 Locate the room that seems empty except for a large figure
that throws boomerangs. Climb the rope on the right about half
way and jump off it, back to the middle. Your character should
land on an invisible floor. Follow this floor to the center of
the screen and climb an invisible rope through the ceiling.
Castlevania Adventure:
Bonus life: Leave the first ten candles in level one. Whip the
eleventh candle to collect an extra life.
Castlevania Adventure:
Unlimited lives: Locate the secret room in level 1 that contains a rope.
Climb the rope to the top of the screen and through the ceiling.
Collect the extra life, then find the extra life that appears
later in the level. After both are collected, intentionally die
and repeat this procedure.
Contra:
Level select: Press Up(2), Down(2), Left, Right,
Left, Right, B, A, B, A,
Start at the title screen.