An adept focused on melee combat can be quite effective in that role. Powers I would recommend are: Combat Sense, Improved Reflexes (no more than level 2), Mystic Armor, Counterstrike, and Quick Draw. Mix and match with others as you see fit. Obviously, you won't be able to afford all of these, but they're some good suggestions. If your team has a mage with Increase Reflexes, then ditching the adept power for Living Focus is a big boost.
Skill-wise, Blades (with a specialty), Pistols (semi-auto specialty), Gymnastics, other physical skills as desired, First Aid, one pilot skill. Anything else is cake.
Gear-wise, a weapon focus (I like the katana for aesthetic reasons), multiple other blades (including concealed blades and forearm snap-blades. You don't want to lose out on your primary means of attack, yeah?), 2 pistols with enough RC you don't take penalties (One loaded with SnS, one with ExEx or APDS. A Sakura Fubuki is good for the SnS one, and the Predator or Praetorian works well for the lethal one), grenades (Flash-bang and Smoke, but also lethal or gas if you want), Armor to max unencumbered on both B/I if you can, goggles/glasses with vision mods to taste, everything else is cake.
Of course, that is just how I would do it. YMMV.
