IMPORTANT: To obtain 210% you must have your sword familiar maxed out to level 99 with 99 experience points. If this is not acheived, the cheat doesnt work.
Summon Spirit (5MP): left, right, up, down and square
Soul Steal (50MP): left, right, down-right, down, down-left, left, right and square
Dark Metamorphosis (10MP): left, up-left, up, up-right, right and square
Tetra Spirits (20MP): hold up for 2 seconds, then press up-right, right, down-right, down and square
Wolf Charge (10MP, must have "skill of wolf", and must also be in Wolf form): down, down-right, right and square
Sword Brothers (30MP, must be using the "Sword" familiar for this to work): down, down-right, right, up-right, hold up for 2 seconds, then press down and square
Wing Smash (8MP, must be in bat form when performing this): hold X, up, up-left, left, down-left, down, down-right, right and then release X
Run: right right, or left left (hold after second press)
Whip Twirl: hold Square, then tap any direction repeatedly
Slide: down and X
Slide Jump: down and X, X again immediatly after the first one
Back Flip: X twice, quickly
Whip Dash: up, down, downright, right and square (Richter is invulnerable when performing this)
Whip Lunge: left, then right and square(or vice versa)
As you start the game, go through like you normally would. But this time, don't but alot from the librarian. Only get the Jewel of Open, and 1 or 2 Library Cards. The proceed with the game.
Once you get in the inverted castle, keep going and get AS MUCH MONEY AS POSSIBLE. Once you get 500,000 go back to the librarian, and purchase the Duplicator. Then go BACK to the inverted castle, and equip it. By this time, you should have at least ONE of the Power of Sire items. Equip that as well. Voila, you have an infinite supply now as long as you have the duplicator equipped.
Now go to the room in the inverted church thing (forgot the name off hand), and enter the room with the big sword that is surrounded by spears and shields. Use the Power of Sire, then leave the room, and go back in, use it again, and so on and so forth. Within an hour I had ALL my familiars powered up to 99/99.
The best part about this trick is that the familar will kill the zombies and both he and you will get the experience making this absolutely simple in gaining levels. In three hours my bat went from level 2 to level 60!
Endings
1. Simply go to the castle tower and defeat Richter without meeting Maria. Alucard will escape the destroyed castle and say a few things before going back to his eternal sleep.
2. Get the Holy Glasses and defeat Richter. Maria will have also escaped and tell you she's continuing her search for what happened to Richter.
For the 3rd and 4th endings, do this first: Get the Holy Glasses and equip them, but DON'T kill Richter. Instead, attack the green orb above him until it shatters. From here you'll go to the inverted castle.
3. Defeat Dracula with anything below 200% and you'll see Maria and Richter waiting for you outside the castle. Maria will decide not to follow Alucard and will return with Richter.
4. Get AT LEAST 199.1% and defeat Dracula. The others will be waiting, but Maria will decide to follow Alucard and try to help him cope with what he is.
Room 1: Outer Wall
When you enter the stage from the Marble Garden, go down to meet an Armor Lord. Beat him
and go to the left. Hack the wall on the left wall to get a Pot Roast. Stand in the Space
for 20 seconds and you will go into a room with items
Room 2: Alchemy Lab And Necromancy Lab
In the Alchemy Lab, hack the wall in the first room going up. Inside is a Heart Max-up.
The one in the Necromancy lab of the inverted castle is in the same spot.
Room 3: Colossem and Reverse Colossem
In the room with Blade Soldiers and Blade Masters, go to the first pillar, face left and
use a few axes to reveil a passage.
Rooms 4 and 5: Orlox's Quarters and Akmodan's Chamber
The first room is in the room with the Sprit Sword. Go to the right to find a dead end,
hack the wall to get some good items.
The second one is later in the stage. When you are in courtyard with the Vahalla Knights, go down to the ground and proceed left. Proceed left until you are in a room with the bridge. Hack Every part of the wall until you reveal the room. Do the same in Akmodan's Chamber's (Orlox's Room in the Inverted Castle)
Room 6: Clock Tower and Reverse Clock Tower
In the room before the Birdman boss, Hack the right wall at the top of the room.
Room 7: Pit to the Catacombs
Use the Demon Familiar to flip the switch after the Cerberas Boss to reveil a room. Do the
same in the inverted castle.