Descent into darkness

I walk through the valley of flames
And from the sky blood begins to rain
All alone, I'm on my way
To the demon god whom I shall slay
Bloodlust consumes me now
To my blade all will fall
All I loved have died today
Most of them by my own blade

The demon presence calls within…
"Kill", it says, go forth and sin…

The path I tread has led astray
By everyone I've been betrayed
I swore to them that they would pay
And this has been their dying day
Alone I walk, no emotion inside
All love I had has withered and died
She had shown me something untrue
And so I was forced to kill her too

Chaos seed…
Has now been freed…

What has happened to my motives true?
What was I supposed to do?
Marching forward, I can't regret
Until my enemy meets his death
My struggle will not be in vain
He will be the one to feel my pain
I will not rest till Chaos dies
Even if my soul must be the price