First find the 3 statue Angel's in Dracula's castle. They give you a color and number that you have to remember after you blow up the first wall and enter the library. When you get through the library and have to place the Angel statues in order, the order will be the Gold Angel on 2, the Red Angel on 4, and the Blue Angel on 8.
If you take too long to finish the game, you will evenually have to fight Vincnet becuase he has turned into a vampire. Also, if you take too long, you will not get to fight the real Dracula, only his Sevant.
Once youre at the big door where Dracula's Servant lies ( the big door with the face on it at the end of the Master's Keep ), you will have to walk around it until you see a lamp in the distance. Be careful, there is an Invisible Floor four steps to the right of where you see the lamp if you are standing right in front of it. Walk and you will have it.
When you have successfully completed the game and after the credits have ended save it. Then restart the game and enable the 'Hard' difficulty setting and collect the first green jewel for the secret #1 entry on the item list. This is found in the silent Forest on level 1, then locate the platform that is floating next to a bridge and jump to the platform and hit the torch to find the jewel.