There aren't too many anime with that amount of pointless violence as Hellsing. Try Elfen Lied(cute girls dismembering eachother), Tokyo Ghoul (faggot getting tortured and mutilated, then becoming a badass and torturing and mutilating others), Devilman (demons mutilating eachother) and Berserk (Guy with big sword being abused and killing everything with extra-brutal ending).