Subweapons

Subweapons can be found in candles. You can have one Subweapon in your possession at a time, and you can use them by pressing Up plus the Attack Button. Each subweapon uses a different amount of hearts.

There's a room in the Alchemy Laboratory that can be accessed once Alucard gains the ability to turn into a bat that has half of the Subweapons in it (it lacks the Clock, Bibuti, Knife and Holy Water). In the Inverted Castle, directly below the Clock Room, there's a room that has all the Subweapons in it.

Name	Picture	Description	Hearts
Agunea		Alucard fires a shot straight ahead, and whatever it hits gets struck by lightning. If you hold down the attack button, more bolts will keep striking (and more hearts will be spent) until the enemy dies or you run out of hearts.	5
Axe		Alucard throws an axe forwards in an arc.	4
Bibuti		Alucard drops some holy ashes in front of himself. Any enemy that comes in contact with them is damaged.	3
Clock		A clock appears for a short while, which freezes most enemies in their tracks.	20
Cross		Large Crosses begin spinning around Alucard, and a beam of light expands to cover the entire screen, causing heavy damage to everything.	100
Holy Book		A Holy Book appears and begins spinning around Alucard, causing damage to any enemy that touches it.	5
Holy Water		Alucard lobs a bottle of holy water in front of him, which hits the ground and causes a small flame.	3
Knife		Alucard throws a knife straight ahead. The knife is quick, but weak.	1
Rebound Stone		Alucard throws a stone at an angle, and it bounces off of any walls it hits, and damages any enemies it comes in contact with.	3

Richter can not only use subweapons like Alucard, but by pressing "Triangle", he can unleash Item Crashes, which are super-powerful attacks using subweapons. These attacks use up many more hearts, though. If Richter uses an item crash when he has no subweapon, his whip becomes a flaming whip for a short time. This uses 15 hearts.

Name	Picture	Description	Hearts	Item Crash Description	Item Crash Hearts
Agunea		Same as Alucard's Agunea. Richter fires a shot straight ahead, and whatever it hits gets struck by lightning. If you hold down the attack button, more bolts will keep striking (and more hearts will be spent) until the enemy dies or you run out of hearts.	10	Richter sends lighting out in all directions, damaging everything on the screen.	20
Axe		The same as Alucard's Axe. Richter throws an axe forwards in an arc.	1	Richter jumps in the air, then several axes appear around him and radiate out, damaging all on-screen enemies.	10
Bibuti		The same as Alucard's Bibuti. Richter drops some holy ashes in front of himself. Any enemy that comes in contact with them is damaged.	1	Richter causes a cloud of ashes directly above himself, damaging any enemy that touches it.	10
Clock		The same as Alucard's Clock. A clock appears for a short while, which freezes most enemies in their tracks.	10	This time, four clock appear, which stop enemies for a bit longer. When the effect wears off, each clock shoots a bolt of lightning before disappearing.	20
Cross		Richter throws a cross out directly in front of him, and it turns around and returns to him like a boomerang.	1	The same as Alucard's regular Cross. Large Crosses begin spinning around Richter, and a beam of light expands to cover the entire screen, causing heavy damage to everything.	20
Holy Book		The same as Alucard's Holy Book. A Holy Book appears and begins spinning around Richter, causing damage to any enemy that touches it.	5	A Holy Book goes behind Richter, and a bit above him, and fires a huge laser forwards, heavily damaging enemies in its path.	15
Holy Water		Richter tosses a bottle of Holy Water diagonally to the ground in front of him, and a flame rises up and travels forward a short way.	1	Richter causes a rainstorm of Holy Water, which causes massive damage to all on-screen enemies. The most powerful item crash.	15
Knife		The same as Alucard's Knife. Richter throws a knife straight ahead. The knife is quick, but weak.	1	Richter throws an extremely long barrage of knives straight ahead.	10
Rebound Stone		Same as Alucard's Rebound Stone. Richter throws a stone at an angle, and it bounces off of any walls it hits, and damages any enemies it comes in contact with.	1	Richter throws four Rebound Stones above him in various arcs, which damage enemies, and then a flash of light damages all enemies on screen.	10