Basic moves : 
X during X : Yamato Combo 1
Y during 2nd X : Yamato Combo finish
Forward + X : Force Edge Combo
XY during 2nd X : Force Edge Combo finish
A during A :  Beowulf Combo 1
B during 2nd A : Beowulf Combo finish
Y during Crouching Y : Upper Slash Combo
Down + Jumping X : Helm Breaker
C : Air Trick
QCF + C : Trick Up
Forward + C : Trick down
Forward + Z : counter
F,D,DF + X : guard for proj

BY :throw (Sword Storm)

Special moves :

QCB + Z after Summoned Swords appear : Blistering Swords
QCF + X/Y/A/B : Judgement Cut
X/Y/A/B during Judgement Cut: Extra Vortex
QCB + X : Stinger
QCB + Y : Rapid Slash
While in Air, QCF + A/B : Starfall
QCB + A/B : Lunar Phase
F,D,DF + A/B : Rising Sun
QCF,HCB + X : Round Trip

Super moves : 

2QCB + Z : Vergil's Dark Ki (1 Powerbar)
D,DB,B,DB,F + X : Devil Trigger Rapid Slash (1 Powerbar)
QCF,HCB + B : Super Star Fall (1 Powerbar)
Hold Z and leave after 2 seconds : Summoned Swords, Spiral  (2 Powerbars) 
2QCF + Y : Devil Trigger Helm Breaker (2 Powerbars) 
2QCF + X : Devil Trigger Judgement Cuts (3 Powerbars)

tanks for K.O.D