Verse -> G5 F5
Chorus -> Bd F G

Im not sure how the picking goes, but this sounds like a good start..
          G5             G5             F5             G5
----------3-3-3---------3-3-3---------1-1-1---------3-3-3- | 
--------1-3-3-3-------1-3-3-3-------1-1-1-1-------1-3-3-3- | 
--0-0-3---------0-0-3---------0-0-3---2-2-2-0-0-3--------- | 
--------------------------------------3-3-3--------------- | 
----------2-2-2---------2-2-2---------3-3-3---------2-2-2- | 
----------3-3-3---------3-3-3---------1-1-1---------3-3-3- | 

Verse:
G5
I left alone, my mind was blank
         F5                                  G5
I needed time to think, to get the memories from my mind

What did I see, can I believe
            F5                                    G5
That what I saw that night was real and not just fantasy

Just what I saw in my old dreams
           F5                             G5
Were the reflections of my woman staring back at me

'cause in my dreams, it's always there
         F5                                      G5
The evil face that twists my mind and brings me to despair

Chorus:
Bd      F5                      G5
Six six six, the number of the beast
Bd       F5                      G5
Hell and fire was spawned to be released


Torches blazed and sacred chants were praised
And as they start to cry, their hands held to the sky
And in the night, the fires burning bright
The ritual has begun, Satan's work is done

Six six six, the number of the beast
Sacrifice is going on tonight

I'm coming back, I will return
I will possess your body and I'll make you burn
'cause I have the fire, I have the force
I have the power to make my evil take its course