You're not a knife thrower by any means, but you manage to stick a knife or two into the creature's flesh, among making other wounds. You save the cleaver to use yourself, finally rushing forward to strike! The monster's tentacles grab at you, but not before your cleaver sinks into it's flesh, making it release you. You chop over and over, until finally, you notice that the creature is no longer moving, green blood coating both the blade and your arm.
You look at the creature...it appears dead.