Cyclops
When running away , jump as your character is moving to stop
him from charging.
Skull Knight King (after the first level)
It will only take damage when hit while one of his bones is
flying around. Stand in the lower right area and keep whipping
it. The bones will not hit your character as much in that location.
Grim Reaper:
Throw boomerangs at him while whipping the flying projectiles.
When he is in a corner, each boomerang will hit him twice. A giant
head will appear when he is defeated. Stay to the left and use
the blocks to jump over it when necessary.
"Evil Twin"
When your character transforms into his "spirit"
partner, it has to turn into the same person. As it reforms, your
character will have a clear shot. Quickly change back and forth.
Although this takes a while, it is the safest way to defeat him.
Final Boss
For the first two forms of Dracula, just whip as fast as possible.
To avoid the shots from the third form, stay four blocks from
the right, so the ground will not pick your character up. Dodge
to the right when Dracula fires at your character. Just use axes
to hit him in the head.