Parasites

Parasites are purchased in shops.  Generally, the stage you're on determines the level of the Parasite you can buy.  For instance, if you're in Stage 3, all the shops will sell Level 3 Parasites.  The exception to this rule is Level 5 Parasites, which appear from the fifth stage on, and Level 6 Parasites, which can be found in hidden shops (see the Secrets secion for locations) and in Stage 7. Parasites can be sold back to the shop for half of their original cost.

Picture	Parasite	Cost (Levels 1-6)						Effect
	Surosa	50	100	150	200	250	300	Fires a single shot.  At level 5-6 it will fire a flurry of shots when your Spirit is over 200 and the button is held down.  Very energy-efficient, and ideal for draining Spirit.  Arguably the best Parasite.
	Priday	250	500	650	750	850	950	Launches a boomerang that will fly about two-thirds of a screen's distance, then return. Pretty powerful, but costs a fair amount of Spirit to fire.  Up to four shots can be on-screen at once.
	Angara	150	250	350	450	550	650	Shoots a small bullet that will arc downward, exploding on impact.  Mines can also be placed by pressing Down + Square, which will detonate after a short while.  Powerful, but lacking in range.  Only one can be on-screen at a time.
	Grattoni	300	450	600	750	900	1000	Launches a large beam of energy that continuously fires as long as the button is held down.  Powerful, but it costs a lot of Spirit to fire.  Its high cost also prevents it from being useful to drain Spirit from enemies.
	Rasti	100	200	400	600	800	1000	Creates a gas cloud upon impact that will damage any enemies within it.  Up to four clouds can be on-screen at once.  It is useful for damaging stationary enemies, but less effective against mobile ones.
	Envia	100	200	300	400	500	600	Creates two large "wings" in front of Shyna that will damage enemies and often stun them.  They also have the added bonus of being almost impossible to reflect.  Low energy cost and moderately powerful, but you'll have to be at close range to use Envia effectively.
	Cavitas	100	200	300	400	600	1200	Displays a small targeting cross hair in front of Shyna when Square is held, which can be manipulated by pressing Up and Down on the control pad.  You can use this to "lock on" to multiple enemies, then release Square to fire small beams at all of them at once.  The beams often stun enemies.  Decent power, somewhat difficult to use, and it's the most expensive Parasite at level 6.

Parasite Bomb effects

All of these attacks will be launched from a sphere that appears above Shyna's head.  So you'll have to be careful to time your attack right and not get it stuck in a ceiling (which will cause it to become rather harmless).