He's become a war machine. He just plows through his enemies (he's very good at what he does)."You've stained your skin and I won't stick around" is him talking to a fallen soldier that he's not going to sit and watch die. "Was I one of them" suggests that he feels dead inside. "Arm and iron conquer heart and soul" along with "His plot is perfect if it sees no contradiction" supports this. As long as he disconnects himself for the "disconnect[ing] souls" who "beg for bliss", he can stay alive.
He's become a war machine. He just plows through his enemies (he's very good at what he does)."You've stained your skin and I won't stick around" is him talking to a fallen soldier that he's not going to sit and watch die. "Was I one of them" suggests that he feels dead inside. "Arm and iron conquer heart and soul" along with "His plot is perfect if it sees no contradiction" supports this. As long as he disconnects himself for the "disconnect[ing] souls" who "beg for bliss", he can stay alive.