Castlevania II: Simon's Quest/Enemies

Death

 * AKA: Grim Reaper
 * Location: Braham Mansion
 * Prize:

Despite being the first and hardest boss of the game, Death is incredibly easy. He floats in the air and has two main attacks: throws small sickles at you and slashes you with his scythe. He'll slowly float towards you and then start slashes; sickles will start appearing as soon as you enter the room.

To defeat him, simply go up to him and start whipping as rapidly as possible. Don't bother with other weapons, and they either can't hit him or won't do enough damage. When he gets too close run under him to an new spot and repeat until he dies.

Death is actually an optional boss, though you should fight him as it gets you the powerful Gold Dagger. If you don't want to fight him, simply ignore him and go through the door on the right to get to the orb. Regardless of whether or not you defeat him, Death is always back when you enter the room.

Carmilla

 * AKA: Crying Mask, Weeping Mask, Vampira, Camilla
 * Location: Laruba Mansion
 * Prize:

The easiest boss in the game, and possibly one of the easiest bosses in the series, as long as you have Dracula's Rib equipped. Carmilla, or more specifically her mask, hovers in midair, out of reach. Her main attack is to drop bloody tears, which explode into a multi-directional burst when they hit the ground. However, as long as you are using the Rib and remain stationary when she's crying, you can't be hit. Her other attack is to swoop around the room in a loop (she often does this several times in a row). Stand back just far enough that she can't hit you when she moves, remain shielded when she crying, and then when she moves, jump and hit her with the Flame Whip. It'll take at little while as she as a decent amount of life, but you're practically invulnerable during the fight.

While you can ignore Carmilla and simply go into the orb room, as you did with Death, you do need to kill her at least once. The Magic Cross is needed to get into Dracula's Castle and can only be retrieved from her.

Most sources from when the game was first released labeled her the Weeping Mask or Crying Mask, however she is actually Carmilla, who would reappear in Dracula X: Rondo of Blood and Castlevania: Circle of the Moon (which mistranslated her name as Camilla).

Dracula

 * Location: Dracula's Castle

The source of Simon's problems, and the last boss of the game. By taking the five parts to his castle, Simon revives the Count so that he can finish him off and break the curse. The fight is either incredibly hard or ridiculously easy, depending on whether or not you wait for Dracula to start attacking.

For the easy way out, simply start throwing Sacred Flames at Dracula's feet as soon as you regain control. Just keep throwing them, one after another, and Dracula won't even be able to move.

If you want the real fight, simply wait for him to start attacking. He'll start orbiting the room so rapidly that multiple images of him will appear, while throwing rather large spinning fireballs at you. The best place to be is in the very center, on the altar where Dracula initially appears. You'll be able to hit the Count, as well as destroy his fireballs. The Diamond weapon can help a bit, as it'll bounce around the room and hit the Count several times.

However you go about it, once you defeat Dracula, you'll see one of three endings, depending on your game time.