In order to find the last, most important element of the ritual - the strength amulet, you need to find someone who created this ritual. A long time ago, an ancient monk who was converted into a vampire by Dracula but did not lose his humanity, vowed to protect all people from the forces of evil. It was him who found how to awaken a force capable of resisting the Evil.
In order to find the monk, combine all the found elements together and use the map. It will tell you how to find the fortress where the monk has prepared a secret place for the ritual. The search for the last element will start from there. Look for MQ Code across the road and follow the arrow signs pointing to the right direction.
Once you have the strength amulet, act very quickly - complete the ritual and destroy Dracula once and for all!