Simon Furman 
To The Death #6 [PDF ebook] 

Earth, 2674: Once again, Dryagin finds he’s a marked man, and where Kraken failed, the evolved aquatic ‘soldier of fortune’ (don’t call him assassin) Killatoa may well succeed! For a start, he’s very, very hard to kill, and once he sets his sights on his prey — akin to a guided missile. The kid gloves are off, as Dryagin strikes back — vowing to take the fight all the way to the very heart of the Tri-Corp empire. But with the looming threat of Asphodel overshadowing all — is he already too late?