I'm looking for a book I read some time in the late 90s-early 00s, translated into Hungarian, but I'm all right with the English title. A sci-fi title set in the mid-future with space flight. The main character is a bounty hunter/assassin, member of a secret order who have advanced tech at their disposal, and whose training concludes with being spaced for 3-4 seconds. He keeps his arsenal in a secret compartment in his apartment.
He's tasked with investigating a disappearance/murder (maybe), and he ends up uncovering a pseudo-vampire ring. The investigation culminates with him hunting a vampire on a docked spaceship, with a modified pistol that launches miniature wooden stakes. The vampire captures him, but instead of killing him, she tells him about her species, who's an ancient, immortal race of bioweapons, and who's trying to make amends for their atrocities by killing other evildoers, and that she hired him to find out if they truly cannot be killed. The story ends with the vampires departing in peace.
A few points I managed to remember:
- The main character is a detective/private eye as a cover for his life. The word they used in translation ("törvényszolga") could be back-translated as bailiff, and there are allusions to him having more funds at his disposal than his job should allow.
- There is one scene where he gets into an underground fight to obtain information, is perplexed that the gang sends out some scrawny guy against him, who he knocks out instantly, and is then absolutely pounded by the actual fighter, after the scrawny person turned out to be the ref.
- The vampires can apparently convert others into vampires too, including the direct superior of the main character at the police, who afterwards has the blinds in his office drawn.
- The hunt at the end happens on a docked ship, with people just walking by outside. It's powered down, and the only light inside is the emergency lighting strips along the corridors. The final showdown happens on the bridge, where the lady who hired him reveals herself to be the leader of the vampires.
- The advanced tech the MC's order has access to includes advanced body armor and energy weapons, but he doesn't use the energy weapons against the aliens, choosing a spring-loaded pistol to shoot sharpened mini-stakes.