Preparing a character concept that for story purposes has to be an elf, and the class build will be a combined vivisectionist/internal alchemist dual archetype (for sneak attack, poison, holding breath for a long time, ki pool discoveries, extracts such as touch of the sea, true strike, etc).
The game will take place in a higher tech level D&D style world (think Ghost in the Shell, Deus Ex, Shadowrun, etc).
The idea is for a two-weapon fighting, two weapon feinting(getting the bluff skill up with traits and such) dagger/shortsword/martial arts fighting style reminiscent of Filipino/Malay styles: Kali/Arnis/Silat/Panantukan.
His ranged weapon will be a repeating crossbow and some pistols for back-up(in this game crossbows that add strength to damage are approved as a house rule item).
The game will involve a lot of disabling devices, infiltration, assassination, recovering data, and getting away clean.
TL:DR
What I am really looking for here, is equipment to help this concept really shine. He can kinda do it all: potions, poisons, extracts, alchemical gear, use magic device for scrolls on his extract list, etc.
Keep in mind a focus on aquatic combat rules, weather conditions, and tight movement(prone crawl spaces, etc).
Wow, that's really awesome! Even that 1 feat dip into Monkey Style is a great way to represent ducking and tumbling across gun fights and such.
(Free action drop, shoot, weather the barrage of gunfire if he gets spotted, swift action acro check and back on his feet without missing a beat!) Maybe have him make potions of protection from arrows as added insurance.