You're Jason Bourne, you took your name from a man you killed, and you're as deadly with your fists, elbows, knees and whatever-fight-coordinator-Jeff-Imada-can-imagine-for-the-project as you are with sniper rifles and sub-machine guns. Combat flows like a ballet of virtuoso brutality and makes full use of the film's remarkably swift and direct martial arts style.
If stuck for something to crack over your foe's head, you can weaponize any objects at hand. Small armies can be decimated by guerrilla fight-and-flight tactics, but then you get in close and engage them hand-to-hand with the help of whatever you can find.
The environment is filled with innocuous articles that can be adapted for murder, but you don't always have to be extra cunning to make it work. A frying pan to the throat will certainly bring plenty hurt, but a head crashed against a wall will do the trick equally well. If you can end an adversary by pushing them through a window, then so much the better. Or you could just humiliate them with some vaudevillian schtick by knocking them into each other so they crumble to the floor - prone and ready for a finishing move.
Jason Bourne's talents include expertise with high explosives and martial arts as well as evasive-driving techniques - although you won't be asked to motor through the ignominy of cluttered driving sections. In the history of videogames, few have managed to incorporate driving sections without them pulling the game down and making it look shabby. GTA, it should be remembered, is in essence a driving game with on-foot sections, so there's no need to write in. Think EA's From Russia with Love and be grateful.